The complexes $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}\left(\mathrm{H}_{2}\mathrm{O}\right)\mathrm{Cl}\right]\mathrm{Br}_{2}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}\mathrm{Br}_{2}\right]\mathrm{Cl}\cdot\mathrm{H}_{2}\mathrm{O}$ are examples of
(a)ionization isomerism
(b)linkage isomerism
(c)geometric isomerism
(d)optical isomerism
Answer
Answer: A ✓ checked by 4AB · confidence medium
Explanation
The two complexes exchange which anion/water sits inside the coordination sphere — ionization (with hydrate) isomerism (a).