Chemistry - Coordination Chemistry Question with Solution | TestHub

${\text{}}_{\text{28}}\text{Ni}$ has $\text{+2}$ oxidation state and since the complex is Diamagnetic, all electrons are paired in inner 3d, orbital to provide the electronic configuration as under:

${\text{L}}^{-}$ might have been a strong field like ${\text{CN}}^{-}.$ Hybridisation is ${\text{dsp}}^{\text{2}}\text{.}$ Number of unpaired electrons = $\text{0}$