Question

Which kind of isomerism is exhibited by octahedral Co(NH₃)₄Br₂Cl?

(a) Geometrical and ionisation 

(b) Geometrical and optical 

(c) Optical and ionisation 

(d) Geometrical only

Answer 1

The correct option (a) Geometrical and ionisation

Explanation:

Octahedral Co(NH₃)₄Br₂Cl shows ionisation and geometrical isomerism. 

In ionisation isomerism ligands shown in coordination sphere and the anions present outside the coordination sphere are exchanged with each other as follows

Coordination number of central atom (cobalt) is six and shape is octahedral, so it shows following geometrical isomers