1.

Which one of the following configurations is correct for alkaline earth elements ? (a) 1s2 2s2 2p3  (b) 1s2 2s2 2p6 3s2 (c) 1s2 2s2 2p6 3s2 3p2 (d) 1s2 2s2 2p6

Answer»

Correct option (b) 1s2 2s2 2p6 3s2

Explanation:

Alkaline earth metals are s-block, normal elements having ns2 general electronic configuration.



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