Question

$[Co(NH_3)_5Br)] \,SO_4$ and $[Co(NH_3)_5SO_4] \,Br$ are examples of which type of isomerism ?

• A. Linkage
• B. Geometrical
• C. Ionisation
• D. Optical

Answer 1

Answer: (C)

Ionisation

Answer 2

$[Co(NH_3)_5Br]SO_4$ and $[Co(NH_3)_5SO_4] Br$ are examples of ionisation isomerism. This form of isomerism arises when the counter ion in a complex salt is itself a potential ligand and can displace a ligand which can then become the counter ion.