Which of the following statements is correct?

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(C) In $[Ni(CN)_4]^{2-}$,the oxidation state of $Ni$ is $+2$. The electronic configuration of $Ni^{2+}$ is $[Ar] 3d^8$.$CN^-$ is a strong field ligand

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$[Ni(CN)_4]^{2-}$ ion has a square-planar geometry and is diamagnetic.

Vedclass · Answer

(C) In $[Ni(CN)_4]^{2-}$,the oxidation state of $Ni$ is $+2$. The electronic configuration of $Ni^{2+}$ is $[Ar] 3d^8$.$CN^-$ is a strong field ligand,which causes pairing of electrons in the $3d$ orbitals.This results in $dsp^2$ hybridization,leading to a square-planar geometry.Since all electrons are paired,the complex is diamagnetic.

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