JEE Main Chemistry question

Maximum covalence of an atom of an element is equal to:

(A)Number of unpaired electrons in the - and -orbitals of the valency shell
(B)Number of unpaired electrons in the -orbitals of the valency shell
(C)Total number of electrons in the - and -orbitals of the valency shellCorrect
(D)Total number of electrons in the -orbitals of the valency shell

Answer: (C)

Solution

For most elements (other than N, O, F, which lack accessible -orbitals to promote electrons into), the maximum covalence is not limited to the ground-state unpaired electron count, because paired (and ) electrons can be "unpaired" through

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Question ID VK-133672