Question

# Which of the following compounds would exhibit co-ordination isomerism?

A
[Cr(H2O)5]Cl2
B
[Cr(NH3)5][Co(CN)5]
C
[Cr(en)2]NO2
D
[Ni(NH3)5][BF4]3

Solution

## The correct option is B $$[Cr(NH_3)_5][Co(CN)_5]$$Co-ordination isomerism is a form of structural isomerism in which the composition of the complexion varies. In a coordination isomer, the total ratio ligand to metal remains the same, but the ligand attached to specific metal ion change. In B option ratio of metal to the ligand is the same and they can exchange their ligands ($$NH_3, CN)$$.Chemistry

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