Coordination CompoundHard

Question

The [Fe(CN)6]3- complex ion :

Options

A.exhibits planar geometry
B.is diamagnetic
C.should be very stable
D.has 2 unpaired electrons

Solution

It has octahedral geometry with d2sp3 hybridisation and is paramagnetic with one unpaired electron.
CFSE is greater because of strong field ligand, CN-. So the [Fe(CN)6]3- complex ion should be very stable.

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