{"id":677147,"date":"2023-09-02T20:22:38","date_gmt":"2023-09-02T14:52:38","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/question\/if-the-two-members-of-a-dobereiner-triad-are-calcium-and-strontium-the-third-member-of-the-triad-is\/"},"modified":"2025-06-19T19:59:46","modified_gmt":"2025-06-19T14:29:46","slug":"if-the-two-members-of-a-dobereiner-triad-are-calcium-and-strontium-the-third-member-of-the-triad-is","status":"publish","type":"questions","link":"https:\/\/infinitylearn.com\/surge\/question\/chemistry\/if-the-two-members-of-a-dbereiner-triad-are-calcium-and-str\/","title":{"rendered":"If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is:"},"content":{"rendered":"","protected":false},"author":1,"template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is:","custom_permalink":"question\/chemistry\/if-the-two-members-of-a-dbereiner-triad-are-calcium-and-str\/"},"categories":[],"acf":{"question":"<p style=\"margin-top:0pt; margin-bottom:0pt; line-height:normal; font-size:12pt\"><span>If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is:<\/span><\/p><br><pstyle=\"margin-top:0pt;margin-bottom:0pt;line-height:normal;font-size:12pt\"><spanstyle=\"font-family:'timesnewroman';-aw-import:ignore\"><p><\/p><pstyle=\"margin-top:0pt;margin-bottom:0pt;line-height:normal;font-size:12pt\"><spanstyle=\"font-family:'timesnewroman';-aw-import:ignore\"><p><\/p><\/spanstyle=\"font-family:'timesnewroman';-aw-import:ignore\"><\/pstyle=\"margin-top:0pt;margin-bottom:0pt;line-height:normal;font-size:12pt\"><\/spanstyle=\"font-family:'timesnewroman';-aw-import:ignore\"><\/pstyle=\"margin-top:0pt;margin-bottom:0pt;line-height:normal;font-size:12pt\">","options":[{"option":"<span>Magnesium<\/span>","correct":false},{"option":"<span>Barium<\/span>","correct":true},{"option":"<span>Cesium<\/span>","correct":false},{"option":"<span>Sodium<\/span><span>&nbsp;<\/span>","correct":false}],"solution":"<span>If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is Barium.<\/span><br><span>The first of Dobereiner's triads was identified in the year 1817 and was constituted of the alkaline earth metals calcium, strontium and Barium. Various attempts were made to classify the known elements based on their properties and in a different order. Johan D\u00f6bereiner, In 1817, classified elements based on their properties. He arranged the elements showing the same properties (triads) in a group called a family. For example, the Alkaline earth metal group includes Calcium (Ca), Strontium (Sr), and Barium (Ba)<\/span><span>&nbsp; <\/span><span>and shows the same chemical properties because of the same valency. <\/span><br><span>&nbsp;<\/span>","subject":"Chemistry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is: - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is:\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infinitylearn.com\/surge\/question\/chemistry\/if-the-two-members-of-a-dbereiner-triad-are-calcium-and-str\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"If the two members of a D\u00f6bereiner triad are calcium and strontium, the third member of the triad is: - 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