{"id":1147,"date":"2014-01-17T11:28:01","date_gmt":"2014-01-17T11:28:01","guid":{"rendered":"http:\/\/nawi.naturundbildung.at\/wp\/?page_id=1147"},"modified":"2018-01-20T23:13:42","modified_gmt":"2018-01-20T23:13:42","slug":"das-periodensystem-der-elemente","status":"publish","type":"page","link":"https:\/\/nawi.naturundbildung.at\/wp\/?page_id=1147","title":{"rendered":"Das Periodensystem der Elemente"},"content":{"rendered":"[ls_accordion][ls_accordion_section title=&#8220;Vorl\u00e4ufer des PSE&#8220;]Bis in die Neuzeit glaubte die Menschheit, die Welt und alle Stoffe w\u00e4ren aus den 4 Elementen Luft, Erde, Feuer und Wasser zusammengesetzt. Erst der franz\u00f6sische Chemiker Antoine Laurent de Lavoisier zeigte &nbsp;im 18. Jahrhundert in Experimenten, unter anderem, dass Wasser etwa kein Element war, sondern eine Verbindung aus Wasserstoff und Sauerstoff. Lavoisier widerlegte somit die 4Elemente-Lehre, die heute noch in der fern\u00f6stlichen Medizin oder Esoterik gelehrt wird.<\/p>\n<p>D\u00f6bereiner, ein deutscher Chemiker, &nbsp;entwickelte bereits 1817 &nbsp;ein System, welches Beziehungen zwischen der Atommasse bestimmter Elemente und deren Eigenschaften darstellte. Dieses System &nbsp;stellte die Existenz von \u00c4hnlichkeiten zwischen Elementen in Dreiergruppen (sogenannten Triads) dar. Chlor, Jod und Brom waren etwa so ein Triad.[\/ls_accordion_section][ls_accordion_section title=&#8220;Entwicklung des&nbsp;PSE durch Meyer &amp; Mendelejew&#8220;]Der deutsche Chemiker <strong>Lothar von Meyer<\/strong> und der russische Arzt, Physiker und Pharmakologe <strong>Dimitri Mendelejew<\/strong> entwickelten <strong>1869<\/strong> unabh\u00e4ngig voneinander eines der wichtigsten Werke der Chemie, das noch heute in seinen Prinzipien g\u00fcltige Periodensystem der Elemente. Dabei werden die Elemente nach ihrer Kernladung (Kernladungszahl=Ordnungszahl=Anzahl der Protonen im Kern) geordnet.<\/p>\n<p>Da Mendelejew beobachtete, dass sich bestimmte Eigenschaften immer wieder periodisch wiederholen, stellte er Elemente mit \u00e4hnlichen Eigenschaften untereinander- er ordnete sie in <strong>Gruppen.<\/strong><\/p>\n<p>Das Periodnsystem der Elemente (PSE) war geschaffen!][\/ls_accordion_section][ls_accordion_section title=&#8220;Aufbau des PSE&#8220;]Elemente werden nach der Kernladung (also der Zahl der Protonen im Kern) geordnet. Elemente mit \u00e4hnlichen Eigenschaften werden gruppiert (senkrechte Spalten=Gruppen)<\/p>\n<p>In den Hauptgruppen findet man Elemente mit der gleichen Anzahl an Au\u00dfenelektronen (=Valenzelektronen). Die Anzahl der Au\u00dfenelektronen kann man bei Elementen der Hauptgruppen an der Hauptgruppenzahl ermitteln. Z.B. Aluminium steht in der 13. Gruppe, das entspricht der III. Hauptgruppe, also hat Aluminium 3 Au\u00dfenelektronen.<\/p>\n<p>Die Hauptgruppen haben auch eigene Namen:<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td valign=\"top\" width=\"36\">I<\/td>\n<td valign=\"top\" width=\"579\">Alkalimetalle<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">II<\/td>\n<td valign=\"top\" width=\"579\">Erdalkalimetalle<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">III<\/td>\n<td valign=\"top\" width=\"579\">Erdmetalle (Borgruppe)<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">IV<\/td>\n<td valign=\"top\" width=\"579\">Kohlenstoffgruppe<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">V<\/td>\n<td valign=\"top\" width=\"579\">Stickstofff-Phosphorgruppe<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">VI<\/td>\n<td valign=\"top\" width=\"579\">Chalkogene (Erzbildner)<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">VII<\/td>\n<td valign=\"top\" width=\"579\">Halogene<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"36\">VIII<\/td>\n<td valign=\"top\" width=\"579\">Edelgase<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Die Elektronen bewegen sich um das Atom auf bis zu 7 Schalen.<\/p>\n<p>Das Periodensystem hat 7 waagrechte&nbsp; Zeilen, diese nennt man Perioden. Die Atome sind im PSE so geordnet, dass Atome mit einer Atomschale (H, He) in der ersten Zeile (Periode) zu finden sind, Elemente mit 2 Schalen in der 2. Zeile (Periode), z.B. Kohlenstoff (C) und Sauerstof (O). Aus der Periode, also der Zeile in welcher ein Element steht, kann man demnach herauslesen, wie viele Schalen ein Atom besitzt.[\/ls_accordion_section][\/ls_accordion]\n<div id=\"attachment_1155\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/nawi.naturundbildung.at\/wp\/wp-content\/uploads\/2014\/01\/mendelejew-MOTYCKA-Timna-2HMP.jpg\" rel=\"lightbox\"><img aria-describedby=\"caption-attachment-1155\" loading=\"lazy\" class=\"size-medium wp-image-1155\" src=\"http:\/\/nawi.naturundbildung.at\/wp\/wp-content\/uploads\/2014\/01\/mendelejew-MOTYCKA-Timna-2HMP-300x275.jpg\" alt=\"mendelejew-MOTYCKA Timna-2HMP\" width=\"300\" height=\"275\" srcset=\"https:\/\/nawi.naturundbildung.at\/wp\/wp-content\/uploads\/2014\/01\/mendelejew-MOTYCKA-Timna-2HMP-300x275.jpg 300w, https:\/\/nawi.naturundbildung.at\/wp\/wp-content\/uploads\/2014\/01\/mendelejew-MOTYCKA-Timna-2HMP-1024x941.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-1155\" class=\"wp-caption-text\">mendelejew-MOTYCKA Timna-2HMP<\/p><\/div>\n<p>Beitrag: Silke geroldinger; Bild: Timna Motycka, 2HMP<\/p>\n<p>Quellen: <a href=\"http:\/\/www.seilnacht.com\/Lexikon\/psgesch.htm\">http:\/\/www.seilnacht.com\/Lexikon\/psgesch.htm<\/a><\/p>\n<p><a href=\"http:\/\/de.wikipedia.org\/wiki\/Lothar_von_Meyer\">http:\/\/de.wikipedia.org\/wiki\/Lothar_von_Meyer<\/a><\/p>\n        <div class=\"wpProQuiz_content\" id=\"wpProQuiz_25\">\n            <h2>PSE Quiz<\/h2>        <div style=\"display: none;\" class=\"wpProQuiz_time_limit\">\n            <div class=\"time\">Zeitlimit: <span>0<\/span><\/div>\n            <div class=\"wpProQuiz_progress\"><\/div>\n        <\/div>\n                <div class=\"wpProQuiz_checkPage\" style=\"display: none;\">\n            <h4 class=\"wpProQuiz_header\">Quiz-Zusammenfassung<\/h4>\n\n            <p>\n                <span>0<\/span> von 10 Fragen beantwortet            <\/p>\n\n            <p>Fragen:<\/p>\n\n            <div style=\"margin-bottom: 20px;\" class=\"wpProQuiz_box\">\n                <ol>\n                                            <li>1<\/li>\n                                            <li>2<\/li>\n                                            <li>3<\/li>\n                                            <li>4<\/li>\n                                            <li>5<\/li>\n                                            <li>6<\/li>\n                                            <li>7<\/li>\n                                            <li>8<\/li>\n                                            <li>9<\/li>\n                                            <li>10<\/li>\n                                    <\/ol>\n                <div style=\"clear: both;\"><\/div>\n            <\/div>\n\n            \n            <input type=\"button\" name=\"endQuizSummary\" value=\"Quiz abschlie\u00dfen\"\n                   class=\"wpProQuiz_button\">\n        <\/div>\n                <div class=\"wpProQuiz_infopage\" style=\"display: none;\">\n            <h4>Informationen<\/h4>\n\n            \n            <input type=\"button\" name=\"endInfopage\" value=\"Quiz abschlie\u00dfen\"\n                   class=\"wpProQuiz_button\">\n        <\/div>\n                <div class=\"wpProQuiz_text\">\n            <p>\n                <p>Wenn Du den Text \u00fcber das Periodensystem aufmerksam gelesen hast, wirst Du die Fragen bestimmt korrekt beantworten k\u00f6nnen:<\/p>\n            <\/p>\n\n            \n            <div>\n                <input class=\"wpProQuiz_button\" type=\"button\" value=\"Quiz starten\"\n                       name=\"startQuiz\">\n            <\/div>\n        <\/div>\n                <div style=\"display: none;\" class=\"wpProQuiz_lock\">\n            <p>\n                Sie haben das Quiz schon einmal absolviert. Daher k\u00f6nnen sie es nicht erneut starten.            <\/p>\n        <\/div>\n                <div style=\"display: none;\" class=\"wpProQuiz_loadQuiz\">\n            <p>\n                Quiz wird geladen...            <\/p>\n        <\/div>\n                <div style=\"display: none;\" class=\"wpProQuiz_startOnlyRegisteredUser\">\n            <p>\n                Sie m\u00fcssen sich einloggen oder registrieren um das Quiz zu starten.            <\/p>\n        <\/div>\n                <div style=\"display: none;\" class=\"wpProQuiz_prerequisite\">\n            <p>\n                Sie m\u00fcssen erst folgende Quiz beenden um dieses Quiz starten zu k\u00f6nnen:                <span><\/span>\n            <\/p>\n        <\/div>\n                <div style=\"display: none;\" class=\"wpProQuiz_results\">\n            <h4 class=\"wpProQuiz_header\">Ergebnis<\/h4>\n                            <p>\n                    <span class=\"wpProQuiz_correct_answer\">0<\/span> von <span>10<\/span> Frage korrekt beantwortet                <\/p>\n                            <p class=\"wpProQuiz_quiz_time\">\n                    Ihre Zeit: <span><\/span>                <\/p>\n                        <p class=\"wpProQuiz_time_limit_expired\" style=\"display: none;\">\n                Zeit ist abgelaufen            <\/p>\n                            <p class=\"wpProQuiz_points\">\n                    Sie haben <span>0<\/span> von <span>0<\/span> Punkten erreicht (<span>0<\/span>)                <\/p>\n                                        <div class=\"wpProQuiz_resultTable\">\n                    <table>\n                        <tbody>\n                        <tr>\n                            <td class=\"wpProQuiz_resultName\">\u00d8 Punkte<\/td>\n                            <td class=\"wpProQuiz_resultValue\">\n                                <div style=\"background-color: #6CA54C;\">&nbsp;<\/div>\n                                <span>&nbsp;<\/span>\n                            <\/td>\n                        <\/tr>\n                        <tr>\n                            <td class=\"wpProQuiz_resultName\">Deine Punkte<\/td>\n                            <td class=\"wpProQuiz_resultValue\">\n                                <div style=\"background-color: #F79646;\">&nbsp;<\/div>\n                                <span>&nbsp;<\/span>\n                            <\/td>\n                        <\/tr>\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n                        <div class=\"wpProQuiz_catOverview\" style=\"display:none;\">\n                <h4>Kategorien<\/h4>\n\n                <div style=\"margin-top: 10px;\">\n                    <ol>\n                                                    <li data-category_id=\"0\">\n                                <span class=\"wpProQuiz_catName\">Nicht kategorisiert<\/span>\n                                <span class=\"wpProQuiz_catPercent\">0%<\/span>\n                            <\/li>\n                                            <\/ol>\n                <\/div>\n            <\/div>\n            <div>\n                <ul class=\"wpProQuiz_resultsList\">\n                                            <li style=\"display: none;\">\n                            <div>\n                                                            <\/div>\n                        <\/li>\n                                    <\/ul>\n            <\/div>\n                        <div style=\"margin: 10px 0px;\">\n                                    <input class=\"wpProQuiz_button\" type=\"button\" name=\"restartQuiz\"\n                           value=\"Quiz erneut starten\">\n                                    <input class=\"wpProQuiz_button\" type=\"button\" name=\"reShowQuestion\"\n                           value=\"Fragen ansehen\">\n                                            <\/div>\n        <\/div>\n                <div class=\"wpProQuiz_reviewDiv\" style=\"display: none;\">\n            <div class=\"wpProQuiz_reviewQuestion\">\n                <ol>\n                                            <li>1<\/li>\n                                            <li>2<\/li>\n                                            <li>3<\/li>\n                                            <li>4<\/li>\n                                            <li>5<\/li>\n                                            <li>6<\/li>\n                                            <li>7<\/li>\n                                            <li>8<\/li>\n                                            <li>9<\/li>\n                                            <li>10<\/li>\n                                    <\/ol>\n                <div style=\"display: none;\"><\/div>\n            <\/div>\n            <div class=\"wpProQuiz_reviewLegend\">\n                <ol>\n                    <li>\n                        <span class=\"wpProQuiz_reviewColor\" style=\"background-color: #6CA54C;\"><\/span>\n                        <span class=\"wpProQuiz_reviewText\">Beantwortet<\/span>\n                    <\/li>\n                    <li>\n                        <span class=\"wpProQuiz_reviewColor\" style=\"background-color: #FFB800;\"><\/span>\n                        <span class=\"wpProQuiz_reviewText\">Vorgemerkt<\/span>\n                    <\/li>\n                <\/ol>\n                <div style=\"clear: both;\"><\/div>\n            <\/div>\n            <div>\n                                    <input type=\"button\" name=\"review\" value=\"Frage vormerken\"\n                           class=\"wpProQuiz_button2\" style=\"float: left; display: block;\">\n                                            <input type=\"button\" name=\"quizSummary\"\n                               value=\"Quiz-Zusammenfassung\" class=\"wpProQuiz_button2\"\n                               style=\"float: right;\">\n                                        <div style=\"clear: both;\"><\/div>\n                            <\/div>\n        <\/div>\n                <div class=\"wpProQuiz_quizAnker\" style=\"display: none;\"><\/div>\n                <div style=\"display: none;\" class=\"wpProQuiz_quiz\">\n            <ol class=\"wpProQuiz_list\">\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>1<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>1<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wer stelle bereits 1817 eine Beziehung zwischen Atommasse und Eigenschaften von Elementen systematisch dar?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"188\"\n                                data-type=\"single\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_188\"\n                                                       value=\"1\"> Lavoisier                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"1\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_188\"\n                                                       value=\"2\"> D\u00f6bereiner                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"2\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_188\"\n                                                       value=\"3\"> Boyle                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"3\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_188\"\n                                                       value=\"4\"> Cavendish                                            <\/label>\n\n                                                                            <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>2<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>2<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wie gruppierte D\u00f6bereiner die Elemente?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"189\"\n                                data-type=\"single\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_189\"\n                                                       value=\"1\"> in Triads                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"1\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_189\"\n                                                       value=\"2\"> in Quintets                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"2\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_189\"\n                                                       value=\"3\"> in Perioden                                            <\/label>\n\n                                                                            <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>3<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>3<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wer entwickelte das moderne PSE<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"190\"\n                                data-type=\"cloze_answer\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                        Lothar <span class=\"wpProQuiz_cloze\"><input data-wordlen=\"5\" type=\"text\" value=\"\"> <span class=\"wpProQuiz_clozeCorrect\" style=\"display: none;\">(Meyer)<\/span><\/span> und Dimitri <span class=\"wpProQuiz_cloze\"><input data-wordlen=\"10\" type=\"text\" value=\"\"> <span class=\"wpProQuiz_clozeCorrect\" style=\"display: none;\">(Mendelejew)<\/span><\/span> entwickelten unabh\u00e4ngig voneinander das PSE                                    <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>4<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>4<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wann wurde das PSE entwickelt?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"191\"\n                                data-type=\"single\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_191\"\n                                                       value=\"1\"> 1869                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"1\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_191\"\n                                                       value=\"2\"> 1759                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"2\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_191\"\n                                                       value=\"3\"> 1649                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"3\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_191\"\n                                                       value=\"4\"> 1903                                            <\/label>\n\n                                                                            <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>5<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>5<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Was bedeutet das K\u00fcrzel PSE?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"192\"\n                                data-type=\"cloze_answer\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                        <span class=\"wpProQuiz_cloze\"><input data-wordlen=\"14\" type=\"text\" value=\"\"> <span class=\"wpProQuiz_clozeCorrect\" style=\"display: none;\">(Periodensystem)<\/span><\/span> der <span class=\"wpProQuiz_cloze\"><input data-wordlen=\"8\" type=\"text\" value=\"\"> <span class=\"wpProQuiz_clozeCorrect\" style=\"display: none;\">(Elemente)<\/span><\/span>                                    <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>6<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>6<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Erg\u00e4nze sinnvoll:<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"193\"\n                                data-type=\"cloze_answer\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                        Elemente mit \u00e4hnlichen Eigenschaften werden in <span class=\"wpProQuiz_cloze\"><input data-wordlen=\"7\" type=\"text\" value=\"\"> <span class=\"wpProQuiz_clozeCorrect\" style=\"display: none;\">(Gruppen)<\/span><\/span> geordnet                                    <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>7<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>7<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wer verr\u00e4t die Anzahl der Au\u00dfenelektronen?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"194\"\n                                data-type=\"single\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_194\"\n                                                       value=\"1\"> Hauptguppenzahl                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"1\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_194\"\n                                                       value=\"2\"> Periode                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"2\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_194\"\n                                                       value=\"3\"> Gruppenzahl                                            <\/label>\n\n                                                                            <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>8<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>8<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Was k\u00f6nnen wir aus der Periode herauslesen?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"195\"\n                                data-type=\"single\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_195\"\n                                                       value=\"1\"> Anzahl der Schalen                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"1\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_195\"\n                                                       value=\"2\"> Anzahl der Au\u00dfenelektronen                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"2\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_195\"\n                                                       value=\"3\"> Elemente mit \u00e4hnlichen Eigenschaften                                            <\/label>\n\n                                                                            <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>9<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>9<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wie hei\u00dfen Elemente der 7. Hauptgruppe?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"196\"\n                                data-type=\"single\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_196\"\n                                                       value=\"1\"> Halogene                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"1\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_196\"\n                                                       value=\"2\"> Chalkogene                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"2\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_196\"\n                                                       value=\"3\"> Edelgase                                            <\/label>\n\n                                                                            <\/li>\n                                    \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"3\">\n\n                                                                                                                                <span style=\"display:none;\"><\/span>\n                                            <label>\n                                                <input class=\"wpProQuiz_questionInput\"\n                                                       type=\"radio\"\n                                                       name=\"question_25_196\"\n                                                       value=\"4\"> Alkalimetalle                                            <\/label>\n\n                                                                            <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; margin-right: 10px !important; display: none;\">\n                                                <input type=\"button\" name=\"check\" value=\"Pr\u00fcfen\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: right !important; margin-right: 10px !important; display: none;\">\n                        <input type=\"button\" name=\"next\" value=\"Weiter\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\" style=\"float: right; display: none;\">\n\n                        <div style=\"clear: both;\"><\/div>\n\n                        \n                    <\/li>\n\n                                    <li class=\"wpProQuiz_listItem\" style=\"display: none;\">\n                        <div\n                            class=\"wpProQuiz_question_page\"  >\n                            Frage <span>10<\/span> von <span>10<\/span>                        <\/div>\n                        <h5 style=\"display: inline-block;\"\n                            class=\"wpProQuiz_header\">\n                            <span>10<\/span>. Frage                        <\/h5>\n\n                                                    <span style=\"font-weight: bold; float: right;\">1 Punkte<\/span>\n                            <div style=\"clear: both;\"><\/div>\n                        \n                                                <div class=\"wpProQuiz_question\" style=\"margin: 10px 0 0 0;\">\n                            <div class=\"wpProQuiz_question_text\">\n                                <p>Wie viele Au\u00dfenelektronen haben Erdmetalle?<\/p>\n                            <\/div>\n                                                        <ul class=\"wpProQuiz_questionList\" data-question_id=\"197\"\n                                data-type=\"cloze_answer\">\n                                \n                                    <li class=\"wpProQuiz_questionListItem\" data-pos=\"0\">\n\n                                        <span class=\"wpProQuiz_cloze\"><input data-wordlen=\"4\" type=\"text\" value=\"\"> <span class=\"wpProQuiz_clozeCorrect\" style=\"display: none;\">(3, Drei)<\/span><\/span>                                    <\/li>\n                                                                <\/ul>\n                        <\/div>\n                                                    <div class=\"wpProQuiz_response\" style=\"display: none;\">\n                                <div style=\"display: none;\" class=\"wpProQuiz_correct\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tKorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                                <div style=\"display: none;\" class=\"wpProQuiz_incorrect\">\n                                                                            <span class=\"wpProQuiz_respone_span\">\n\t\t\t\t\t\t\t\t\tInkorrekt\t\t\t\t\t\t\t\t<\/span><br>\n                                    <p><\/p>                                <\/div>\n                            <\/div>\n                        \n                        \n                                                <input type=\"button\" name=\"back\" value=\"Zur\u00fcck\"\n                               class=\"wpProQuiz_button wpProQuiz_QuestionButton\"\n                               style=\"float: left !important; 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Erst der franz\u00f6sische Chemiker Antoine Laurent de Lavoisier zeigte &nbsp;im 18. 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