Which kind of isomerism is exhibited by octahedral [Co(NH₃)₄Br₂]Cl

Options

(a) Geometrical and ionisation
(b) Geometrical and optical
(c) Optical and ionisation
(d) Geometrical only

Correct Answer:

Geometrical and ionisation

Explanation:

[Co(NH₃)₄Br₂]Cl also exhibits ionization isomerism giving [Co(NH₃)₄BrCl]Br.