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Metals in group 1A, 2A, 3A can form mono-, di- and trivalent positive ions respectively,

and all are metals except Boron, which is a metalloid (between Carbon -a nonmetal- and Berillium -a metal- in period II).

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Dewitt Abbott

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2y ago
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Q: The metals in Groups 1A 2A and 3A?
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