Which of the following statements is correct?

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(C) $1$. In $K_2[Ni(CN)_4]$,$Ni$ is in $+2$ oxidation state $(d^8)$. It is square planar and diamagnetic. $K_4[Ni(CN)_4]$ contains $Ni(0)$ $(d^{10})$,

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$[AuCl_4]^-$ is optically inactive but $[ZnCl(NH_2)(CO)(PPh_3)]$ is optically active.

Vedclass · Answer

(C) $1$. In $K_2[Ni(CN)_4]$,$Ni$ is in $+2$ oxidation state $(d^8)$. It is square planar and diamagnetic. $K_4[Ni(CN)_4]$ contains $Ni(0)$ $(d^{10})$,which is tetrahedral and diamagnetic. Thus,option $A$ is incorrect.$2$. $[RhCl(PPh_3)_3]$ (Wilkinson's catalyst) is square planar. $[RhH_2Cl(PPh_3)_3]$ is octahedral. Thus,option $B$ is incorrect.$3$. $[AuCl_4]^-$ is a square planar complex,which is achiral and optically inactive. $[ZnCl(NH_2)(CO)(PPh_3)]$ is a tetrahedral complex with four different ligands attached to the central $Zn$ atom,making it chiral and optically active. Thus,option $C$ is correct.

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