Question

$\left[Co\right(N{H}_3{)}_{5}S{O}_4]Br$ and $\left[Co\right(N{H}_3{)}_{5}Br]S{O}_4$ are _______

• A. Ionisation isomers
• B. Linkage isomers
• C. Coordination isomers
• D. Hydrate isomers

Answer 1

The correct option is A Ionisation isomers

In these isomers there is a exchange of ligands between coordination sphere and ionisation sphere. These isomers give different ions when dissolved in water.

$\left[Co\right(N{H}_3{)}_{5}S{O}_4]Br\rightleftharpoons [Co(N{H}_3{)}_{5}S{O}_4{]}^{+}+B{r}^{-}$

$\left[Co\right(N{H}_3{)}_{5}Br]S{O}_4\rightleftharpoons [CO(N{H}_3{)}_{5}Br{]}^{2+}+S{O}_4^{2-}$

Hence, option (a) is correct.