First slide
Aplicaitons of VBT
Question

COLUMN-I(COMPLEX)COLUMN-II(HYBRIDIZATION)
I) K2NiCl4A) dsp2
II) FeH2O6SO4B) sp3
III)K3CoCN6C) d2sp3
IV)PtCl2NH32D) sp3d2
Correct match is 

Moderate
Solution

Ni+23d8...weak field ligandCl-.... no pairing occurs...sp3; Fe+23d6...weak field ligandH2O.... no pairing occurs...sp3d2; Co+33d6...strong field ligandCN-....  pairing occurs...d2sp3; Pt+2..C.No-4.....irrespective of ligand strength... pairing occurs...dsp2;

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