Which of the following statements is incorrec | vedclass

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(A) In $Ni(CO)_4$,the oxidation state of $Ni$ is $0$. The electronic configuration is $[Ar] 3d^8 4s^2$. Since $CO$ is a strong field ligand,it causes

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$Ni(CO)_4$ - Tetrahedral,Paramagnetic

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(A) In $Ni(CO)_4$,the oxidation state of $Ni$ is $0$. The electronic configuration is $[Ar] 3d^8 4s^2$. Since $CO$ is a strong field ligand,it causes pairing of electrons,resulting in $sp^3$ hybridization. Thus,it is tetrahedral and diamagnetic. Option $A$ states it is paramagnetic,which is incorrect.In $[Ni(CN)_4]^{2-}$,$Ni$ is in the $+2$ oxidation state $(3d^8)$. $CN^-$ is a strong field ligand,causing pairing to form $dsp^2$ hybridization,making it square planar and diamagnetic.In $[NiCl_4]^{2-}$,$Ni$ is in the $+2$ oxidation state $(3d^8)$. $Cl^-$ is a weak field ligand,resulting in $sp^3$ hybridization,making it tetrahedral and paramagnetic.

Which of the following statements is incorrect?

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