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 BAgNO3 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.