Coordination CompoundHardBloom L2

Question

A complex of certain metal has the magnetic moment of 4.91 BM whereas another complex of the same metal with same oxidation state has zero magnetic moment. The metal ion could be

Options

A.Co2+
B.Mn2+
C.Fe2+
D.Fe3+

Solution

Sol. Case – 1: 3d6 in case of W.F.L.

Fe+2 = 3d6 = 4 u.p.e

M.M. = 4.91 B.M.

Case - 2 : 3d6 in case of S.F.L.

Fe+2 = 3d6 = 0 u.p.e

M.M. = O. B.M.

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