What kind of isomerism exists between `[Cr(H_(2)O)_(6)]Cl_(3)` (violet) and `[Cr(H_(2)O)_(5)Cl].H_(2)O` (greyish-green)?

Options

A. Linkage isomersim
B. Solvate isomerism
C. Ionisation isomerism
D. Coordination isomerism

Answer

C

Explanation

Solute isomerism to shown when two compounds having same molecular formula differ by whether or solvent molecule is directly bonded to metal ion or is present as free solvent molecules in the crystal lattice.
When water is present as solvent and show this type of isomerism then it is known as hydrate isomerism.
Coordination compound `[Cr(H_(2)O)_(6)]Cl_(3)` and `[Cr(H_(2)O)_(5)Cl]H_(2)O.Cl_(2)` are solvate isomers, because water is exchanged by chloride ion. this is why both of them show differsent colour on exposure to sunlight.