The two isomers X and Y with the formula `Cr(H_(2)O)_(5)ClBr` were taken for experiment on depression in freezing point. It was found that one mole of X gave depression corresponding to 2 moles of particles and one mole of Y gave depression to 3 moles of particles. The structural formulae of X and Y raspectively are

Options

A. `[Cr(H_(2)O)_(5)Cl]Br_(2), [Cr(H_(2)O)_(2)Br_(2)]Cl.H_(2)O`
B. `[Cr(H_(2)O)_(5)Cl]Br_(2), [Cr(H_(2)O)_(3)ClBr]H_(2)O`
C. `[Cr(H_(2)O)_(5)Br]BrCl, [Cr(H_(2)O)_(4)ClBr]H_(2)O`
D. `[Cr(H_(2)O)_(4)Br_(2)]Cl.H_(2)O, [Cr(H_(2)O)_(5)Cl]Br_(2)`

Explanation

1 mole of complex X giving 2 moles of particles will be `[Cr(H_(2)O)_(4)Br_(2)]Cl.H_(2)O` i.e. `|Cr(H_(2)O)_(4)Br_(2)]^(+)+Cl^(-)`
1 mole of complex Y giving 3 moles of particles will be `|Cr(H_(2)O)_(5)Cl|Br_(2)` i.e. `|Cr(H_(2)O)_(5)Cl^(-)|^(2-)+2Br^(-)`.