The theory that can completely/properly explain the nature of bonding in [Ni(Co)4] is :
Show Hint
- Wemer's theory
- Valence bond theory
- Crystal field theory
- Molecular orbital theory
The Correct Option is D
Solution and Explanation
CO donates a lone pair from carbon to Ni (sigma bond) and Ni donates electrons from filled d-orbitals into the empty antibonding \(\pi^*\) orbitals of CO (pi back-bonding): synergic bonding.
Werner's theory only explains primary and secondary valences; valence bond theory explains geometry and magnetism but not the back bonding; crystal field theory treats CO as a point charge/dipole and cannot explain why neutral CO is a strong field ligand.
Molecular orbital theory handles the sigma and pi interactions completely.
Answer: (D) Molecular orbital theory
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