MHT CET 2022 Chemistry question

Which among the following cations forms a most stable complex with the same ligand?

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

Answer: (B)

Solution

For a given ligand the stability of complexes of the divalent first-row transition metal ions follows the Irving-Williams order \mathrm{Mn^{2+}<Fe^{2+}<Co^{2+}<Ni^{2+}<Cu^{2+}>Zn^{2+}}, which reflects the increase in charge density (decreasing ionic radius) and crystal field stabilisation along the series. Among

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Question ID VK-094286