Question
GeneralGeneralGeneral

Which of the following complexes show coordination isomerism?

A) [Ag(NH3)2][Ag(CN)2]

B) [Co(NH3)6][Cr(CN)6]

C) [Co(NH3)6][Co(CN)6]

D) [Fe(NH3)6][Co(CN)6]

E) [Co(NH3)6][Fe(CN)6]

Verified Answer

Coordination isomerism occurs when both cationic and anionic parts are complex ions and ligands can exchange between them.

Requirements:

  • Both ions must be coordination complexes.
  • Ligand exchange should be possible.

Checking the complexes:

  • A → Does not satisfy the condition effectively.
  • B → Shows coordination isomerism.
  • C → Same central metal, no coordination isomerism.
  • D → Shows coordination isomerism.
  • E → Shows coordination isomerism.

Thus B, D and E exhibit coordination isomerism.

Final Answer

Option (2) B, D and E