1.

In which there is outer orbital hyridisation

Answer»

`[ZN(NH_(3))_(4)]^(2+)`
`[Co(NH_(3))_(6)]^(3+)`
`[Cr(NH_(3))_(6)]^(3+)`
`[V(NH_(3))_(6)]^(3+)`

Solution :`V(Z=23):[AR]^(18)4s^(2)3d^(3)`
`V^(3+) : [Ar]^(18)3d^(2)`
`V^(3+)` undergoes `d^(2)SP^(3)` hybridisation, involving 3d, 4s and 4p-orbitals, to accommodate six lone pairs form six `NH_(3)` molecules. Thus , outer orbitalhybridisation is involved


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