MHT CET 2022 Chemistry question
Which among the following cations forms least stable complex if the ligand is same?
Answer: (D)
Solution
For the same ligand, the stability of complexes of divalent first-row transition metal ions follows the Irving-Williams order: Mn^{2+} < Fe^{2+} < Co^{2+} < Ni^{2+} < Cu^{2+} > Zn^{2+}. It increases with decreasing ionic radius and increasing crystal field stabilisation energy up to
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