Coordination CompoundHardBloom L3

Question

The correct order of magnetic moments is:

Options

A.[MnCl4]2– > [CoCl4]2– > [Fe(CN)6]4–
B.[MnCl4]2– > [Fe(CN)6]4– > [CoCl4]2–
C.[Fe(CN)6]4– > [MnCl4]2– > [CoCl4]2–
D.[Fe(CN)6]4– > [CoCl4]2– > [MnCl4]2–

Solution

Sol. [MnCl4]–2 ⇒ Mn+2 = 3d5

Cl is W.F.L. ⇒ 5 u.p.e.

[CoCl4]–2 ⇒ Cl is W.F.L. ⇒ Co+2 = 3d7 ⇒ 3 u.p.e.

[Fe(CN)6]–2 = 3d6 ⇒ CN– is S.F.L. = 0 u.p.e

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