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Elements in Groups 1a, 2a, and 3a-8a are known as the main group elements. Main group elements are in the s-block and the p-block. The electron configurations. - ppt download
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Group 2 Elements on the Periodic Table | Names, Properties & Activity - Video & Lesson Transcript | Study.com
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Alkaline Earths (Group 2A Elements): Definition & Properties - Video & Lesson Transcript | Study.com
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