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Q.
Which of the following shows $dsp^2$ hybridisation and a square planar geometry?
Chemical Bonding and Molecular Structure
Solution:
Rules to determine hybridisation of a coordination compound:-
1. Central metal ion release the electron equal to its oxidation state,
2. Metal ion arrange empty orbitals equal to its coordination number,
3. These empty orbital arrange in a specfic geometry,
4.Hybridised orbitals of metal ion forms bonds with the lone pair orbitals of ligand.
Apply these rules for $\left[ Ni ( CN )_{4}\right]^{2-}$,