MHTCET 10 May 2024 Shift 1 Paper

Concept:Solvate isomerism arises when a solvent molecule is differently distributed between the coordination sphere and the outer lattice.Explanation:In $\left[\mathrm{Cr}\left(\mathrm{H}_{2}\mathrm{O}\right)_{6}\right]\mathrm{Cl}_{3}$, all six water molecules are directly coordinated to the metal ion inside the coordination sphere.In $\left[\mathrm{Cr}\left(\mathrm{H}_{2}\mathrm{O}\right)_{5}\mathrm{Cl}\right]\mathrm{Cl}_{2}\cdot\mathrm{H}_{2}\mathrm{O}$, one water molecule is present as the solvent of crystallization, outside the coordination sphere.Thus, the two compounds differ only in whether a water molecule is inside or outside the coordination sphere.This difference is the characteristic feature of solvate isomerism.Answer:The isomerism exhibited is solvate isomerism, i.e., option B.