Chemistry - Carbonyl compounds Question with Solution | TestHub

$\left[\mathrm{C}\mathrm{o}\right(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{3+}$is diamagnetic$\left({\mathrm{t}}_{2\mathrm{g}}^6\mathrm{e}{\mathrm{g}}^0\right)$and is inner orbited complex also as inner 3d electrons get paired here.
$\left[\mathrm{Z}\mathrm{n}\right(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{2+}$is outer orbital complex and diamagnetic
$\left[\mathrm{C}\mathrm{r}\right(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{3+}$is inner orbital complex and paramagnetic