SATHEE: Coordination Compounds - Result Question 40

Coordination Compounds - Result Question 40

####42. The geometry and magnetic behaviour of the complex $[N i (C O)_{4}]$ are

[2018]

(a) Square planar geometry and diamagnetic

(b) Tetrahedral geometry and diamagnetic

(d) Square planar geometry and paramagnetic

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Solution:

(b) $N i (28) : [A r] 3 d^{8} 4 s^{2}$

$∵ C O$ is a strong field ligand, so unpaired electrons get paired. Hence, configuration would be:

For, four ‘CO’ligands hybridisation would be $s p^{3}$ and thus the complex would be diamagnetic and of tetrahedral geometry.

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Coordination Compounds - Result Question 40

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