Which among the following statements about $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is NOT true?
Which among the following statements about $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is NOT true?
In this electron are paired prior to hybridization
Oxidation state of $\mathrm{Ni}$ is +6
Ni undergoes dsp ${ }^2$ hybridization
It is a square planar complex
Solution
$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-} \Rightarrow \mathrm{Ni}^{2+}$
Oxidation state of $\mathrm{Ni}$ is +2
- $\quad \mathrm{CN}^{-}$is strong field ligand.
- $\quad$ Electrons are paired prior to hybridization.
$\mathrm{Ni}^{2+}[\mathrm{Ar}] 3 \mathrm{~d}^8$
- $\quad \mathrm{dsp}^2$ hybridization and square planar complex.