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Question

The reagent which can distinguish [Cr(NH3)5Br]Cl and [Cr(NH3)5Cl]Br and the type of isomerism exhibited by these two complexes are :

A
BaCl2 and ionisation isomerism
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B
AgNO3 and ionisation isomerism
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C
AgNO3 and coordination isomerism
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D
BaCl2 and linkage isomerism
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Solution

The correct option is B AgNO3 and ionisation isomerism
[Cr(NH3)5Br]Cl and [Cr(NH3)5Cl]Br can be distinguished by AgNO3 and isomerism shown is ionisation isomerism.
AgNO3 reacts with Cl atom in the outer coordination sphere to form white precipitate of AgCl. When Br is in the outer coordination sphere, a pale yellow precipitate of AgBr forms.

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