The secondary valency of metal is equal to and is satisfied by ligands.

Find number of ligands which is/are stronger ligand as compared to ${\mathrm{NH}}_3$

${\mathrm{NO}}_2^{-},{\mathrm{H}}_2\mathrm{O},{\mathrm{NO}}_3^{-},{\mathrm{F}}^{-},{\mathrm{C}}_2{\mathrm{O}}_4^2,\mathrm{en},{\mathrm{Cl}}^{-},\overline{\mathrm{C}}\mathrm{N}$

If crystal field stablization energy of ${\left[{\mathrm{ML}}_6\right]}^{+\mathrm{n}}$ is $-0.8 {∆}_{\mathrm{o}}$.

Find minimum number of electrons in ${\mathrm{t}}_{2_{\mathrm{g}}}$ orbitals of metal ion?

Find number of $\mathrm{Co}-\mathrm{N}$ linkage in,

Pentaamminecobalt$\left(\mathrm{III}\right)-\mu -$ amidodiamminetriaquacobalt$\left(\mathrm{III}\right)$ chloride.