1.

In which of the following complex(s) spin only magnetic moment is independent, from the nature of ligand. (L=monodentate ligand) :

Answer»

`[OVERSET(II)NiL_(4)]`
`[overset(II)NiL_(6)]`
`[overset(III)FeL_(6)]`
`[overset(III)CrL_(6)]`

Solution :`Ni^(2+)(d^(8))`

CN=6 Only `sp^(3)d^(2)`
`FE^(3+)(d^(6))C.N.=6` both `sp^(3)d^(2)` and `d^(2)sp^(3)` POSSIBLE
`Cr^(3+)(d^(3))` only `d^(2)sp^(3)` (C.N.=6)


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