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ruslelena [56]
3 years ago
7

What is the valence electron configuration of the group 2a elements?

Chemistry
1 answer:
iren [92.7K]3 years ago
7 0

Answer: nS2

Explanation: The valence electronic configuration of group 2a elements is "nS2",they have a complete filled "S" orbital with 2 valence electrons. e. g, Berrylium = 1s2 2S2, Calcium = 1s2 2s2 2p6 3s2 3p6 4s2

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