Question

What kind of isomerism exists between $\left[Cr\right(H_{2}O{)}_6]C{l}_3$ (violet) and $\left[Cr\right(H_{2}O{)}_{5}Cl]C{l}_2.H_{2}O$ (greyish-green)?

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

Answer 1

The correct option is B Solvate isomerism

Solvate (or hydrate) isomerism exists between $\left[Cr\right(H_{2}O{)}_6]C{l}_3$ (violet) and $\left[Cr\right(H_{2}O{)}_{5}Cl]C{l}_2.H_{2}O$ (greyish-green).

For $\left[Cr\right(H_{2}O{)}_6]C{l}_3$ (violet), the number of water molecules inside the co-ordination sphere is six and the number of water molecules outside the co-ordination sphere is 0.

For, $\left[Cr\right(H_{2}O{)}_{5}Cl]C{l}_2.H_{2}O$ (greyish-green), the number of water molecules inside the co-ordination sphere is five and the number of water molecules outside the co-ordination sphere is one.