JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Which has minimum number of unpaired d-electrons?

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Correct option: C

\mathrm{C}{\mathrm{o}^{2 + }}

Option B is correct because Co3+ (d6) has the minimum number of unpaired d-electrons (0 in strong field, 4 in weak field) compared to the other options.

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