Chemistry - Coordination Chemistry Question with Solution | TestHub

$\mathrm{In}{\left[\mathrm{Cr}(\mathrm{NO})\left({\mathrm{NH}}_3\right)(\mathrm{CN}{)}_4\right]}^{2-}$, ${\mathrm{Cr}}^{2+}\left({\mathrm{d}}^4\right)$ is given as :
i.e., 2 unpaired electrons $$\mu =\sqrt{2(2+2)}=\sqrt{8}=2.82$$