A metal complex having composition `[Cr(NH_(3))_(4)Br_(2)I]` was isolated in two forms (X) and (Y). Form (X) reacts with `AgNO_(3)` to give a pale yellow precipitate which is partially soluble in excess of `NH_(4)OH` whereas (Y) gives a greenish yellow precipitate which is insoluble in `NH_(4)OH`.
what is formula of X and Y?

Options

A. linkage isomerism
B. Coordination isomerism
C. Ionization isomerism
D. None of these

Answer

c

Explanation

X has one `Br^(-)` ion outside the co-ordination sphere. Y has `I^(-)` outside the co-ordination sphere. Note AgBr is partially soluble in ammonia whereas AgI is insoluble.