Question

What type of isomerism is shown by the complex \([\text{Co(NH}_3)_6][\text{Cr(CN)}_6]\)?

Hint:

Ionization isomerism occurs when two compounds have the same molecular formula but differ in the arrangement of ions.

Answer 1

The complex \([\text{Co(NH}_3)_6][\text{Cr(CN)}_6]\) exhibits ionization isomerism.

In ionization isomerism, two different compounds have the same molecular formula but differ in the way the ions are arranged. One of the isomers will have the ion \([\text{Cr(CN)}_6]^{3-}\) as the anion, while the other will have the ion \([\text{Co(NH}_3)_6]^{3+}\) as the anion.

The difference in the arrangement of ions leads to the formation of different ions in solution, which are responsible for the isomerism.