What type of hybridization is present in Ni o | vedclass

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(B) In $[NiCl_4]^{2-}$,$Ni$ is in $+2$ oxidation state: $Ni^{2+} \rightarrow [Ar] 3d^8$.Since $Cl^-$ is a weak field ligand,it does not cause pairing

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$sp^3$ and $dsp^2$

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(B) In $[NiCl_4]^{2-}$,$Ni$ is in $+2$ oxidation state: $Ni^{2+} \rightarrow [Ar] 3d^8$.Since $Cl^-$ is a weak field ligand,it does not cause pairing of $3d$ electrons.Thus,the hybridization involved is $sp^3$ using $4s$ and $4p$ orbitals.In $[Ni(CN)_4]^{2-}$,$Ni$ is in $+2$ oxidation state: $Ni^{2+} \rightarrow [Ar] 3d^8$.$CN^-$ is a strong field ligand,which causes pairing of $3d$ electrons.This leaves one $3d$ orbital vacant,resulting in $dsp^2$ hybridization using one $3d$,one $4s$,and two $4p$ orbitals.

What type of hybridization is present in $Ni$ of $[Ni(Cl)_4]^{2-}$ and $[Ni(CN)_4]^{2-}$ respectively?

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