MHT CET 2024 Chemistry question

Which from following molecules does not have lone pair of electrons in valence shell of central atom?

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

Count the valence electrons of the central atom and those used in bonding. : N has 5 valence electrons, 3 used in N-H bonds, leaving one lone pair. : O has 6, uses 2, leaving two lone pairs. : S has 6, uses 4 in two S=O

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Question ID VK-093369