Question

$\left[Co{\left(en\right)}_{2}N{O}_{2}Br\right]Cl$ can exhibit :

• A. Geometrical isomerism
• B. Optical isomerism
• C. Linkage isomerism
• D. Ionization isomerism

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Geometrical isomerism
B Optical isomerism
C Linkage isomerism
D Ionization isomerism

We can comfortably draw `cis-trans` forms for $\left[Co{\left(en\right)}_{2}N{O}_{2}Br\right]Cl$. They will be two different molecules and hence we can say that it will show geometrical isomerism.

The `cis` form will also be optically active which means we can see optical isomerism as well.

$N{O}_2$ is an ambidentate ligand which means that it can donate via `N` or `O`. Hence, there is a possibility of linkage isomerism.

We also see that there's a possibility of exchange of ligands between the coordination sphere and the ionization sphere. Hence, this complex also displays ionization isomerism.