Which of the following electronic configurations in the outermost two shells is characteristic of the alkaline earth metals?

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(n−1)s2p6ns2

(n−1)s2p6d10ns2

(n−1)s2p6ns2p1

None of these

answer is D.

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Detailed Solution

The electronic configuration (n−1)s2p6ns2 represents alkaline earth metals.eg: The electronic configuration of ‘Mg’ is 1s22s22p63s2.

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