Question

The complexes $\left[PtC{l}_2{\left(N{H}_3\right)}_4\right]B{r}_2$ and $\left[PtB{r}_2{\left(N{H}_3\right)}_4\right]C{l}_2$ are examples for isomerism

• A. geometrical
• B. optical
• C. ionisation
• D. linkage

Answer 1

Answer: (C)

Since the complexes $\left[PtC{l}_2{\left(N{H}_3\right)}_4\right]B{r}_2$ and $\left[PtB{r}_2{\left(N{H}_3\right)}_4\right]C{l}_2$ have the same molecular formula but on ionisation they give different ions, they exhibit ionisation isomerism.
$\left[PtC{l}_2{\left(N{H}_3\right)}_4\right]B{r}_2\rightleftharpoons {\left[PtC{l}_2{\left(N{H}_3\right)}_4\right]}^{2-}+2B{r}^{-}$ $\left[PtB{r}_2{\left(N{H}_3\right)}_4\right]C{l}_2\rightleftharpoons {\left[PtB{r}_2{\left(N{H}_3\right)}_4\right]}^{2+}+2C{l}^{-}$