Multiple choice

Which of the following complexes shows co-ordination isomerism?

  1. [Cr (NH3)6] Cl3

  2. [Cr (NH3)6] [CO (en)3]

  3. [CO (en)2 Cl2] Cl

  4. [COCl2 (en)2] SO4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Coordination isomerism occurs when both the cation and anion are complex ions and ligands can be exchanged between them. [Cr(NH3)6][Co(en)3] fits this definition.

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