First slide

Aplicaitons of VBT

Question

Which one of the following is a diamagnetic complex ?

Moderate

A

${[Fe {(CN)}_{6}]}^{- 3}$
B

${[Mn {(CN)}_{6}]}^{- 3}$
C

${[Ni {(CN)}_{4}]}^{- 2}$
D

All of these

Solution

Ni⁺² (rearrangement) . . . .
In presence of strong ligand like CN^-
Ni⁺² undergoes rearrangement. It is diamagnetic.
Option (1) . . . n = 1
Option (2) . . . n = 2

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