JEE Main Chemistry question

Which is expected to show paramagnetism?

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

Answer: (A)

Solution

has an odd total number of valence electrons (Cl contributes 7, each O contributes 6, giving , an odd number), which means it must have at least one unpaired electron, making it paramagnetic —

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Question ID VK-133483