Question

On the basis of valence bond theory explain the oxidation state, hybridisation, geometry and magnetic nature of metal in complex [CoF6]3-.

Answer 1

Explain on the basis of valence bond theory that [Ni(CN)4]2– ion with square planar is diamagnetic and the [NiCl4]2– ion with tetrahedral geometry is paramagnetic. Ni is in the +2 oxidation state i.e., in d8 configuration. ... CN– will cause pairing of electrons. It is diamagnetic in nature due to the unpaired electron.

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