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The central metal ion in the complex mak...

The central metal ion in the complex makes available a number of empty orbitals for the formation of co-ordinate bonds with suitable ligands. The inner d-orbitals or outer d-orbitals are involved. The empty hybrid orbitals of metal ion overlap with the filled orbitals of ligand to from metal ligand co-ordinate bonds. For co-ordination number 6 octahedral geometry and `sp^(3),d^(2)ord^(2)sp^(2)` hybridisation involved and for cordiantion number 4 tetrahedral geometry, square planar geometry and `sp^(3).dsp^(2)` hybridisation involved.
Geometry of `[Ni(CN)_(4)]^(-2)` ion is

A

tetrahedral

B

Octahedral

C

square planar

D

none.

Text Solution

Verified by Experts

The correct Answer is:
C
`CN^(-)` is a strong field ligand so rearrangement of electrons occurs.

After rearrangement :

`:.` Square planar geometry.
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