Question

The ratio of unpaired electrons present in d orbitals of $C{o}^{2+}$ and $C{r}^{3+}$ is:

Answer 1

Ratio of unpaired $e^{-}$ present in d-orbitals of ${CO}^{2+}$ and ${Cr}^{3+}$ is :

${CO}^{2+}\to \left[Ne\right]{3s}^2{3p}^6{4s}^0{4d}^{7}n=3$

${Cr}^{3+}\to \left[Ne\right]{3s}^2{3p}^6{4s}^0{4d}^{3}n=33:3=1:1$