Question

Which of the following pairs of isomers is not correctly matched with its type of isomerism ?

• A. $\lbrack Cr(NH_{3})_{6}\rbrack\lbrack Cr(CN_{6})\rbrack$ and $\lbrack Cr(NH_{3})_{4}(CN_{2})\rbrack\lbrack Cr(NH_{3})_{2}(CN)_{4}\rbrack$ - Coordination isomerism
• B. $\lbrack Co(NH_{3})_{5}NO_{2}\rbrack Cl_{2}$and $\lbrack Co(NH_{3})_{5}ONO\rbrack Cl_{2}$- Linkage isomerism
• C. $\lbrack Co(py)_{2}(H_{2}O)_{2}Cl_{2}\rbrack Cl$and $\lbrack Co(py)_{2}(H_{2}O)Cl_{3}\rbrack H_{2}O$ - Coordination isomerism
• D. $\lbrack Pt(NH_{3})_{4}Br_{2}\rbrack Cl_{2}$and $\lbrack Pt(NH_{3})_{4}Cl_{2}\rbrack Br_{2}$- Ionisations isomerism

Answer 1

Answer: (C)

$\lbrack Co(py)_{2}(H_{2}O)_{2}Cl_{2}\rbrack Cl$and

$\lbrack Co(py)_{2}(H_{2}O)Cl_{3}\rbrack H_{2}O$ - Coordination isomerism

Answer 2

$\lbrack Co(py)_{2}(H_{2}O)_{2}Cl_{2}\rbrack Cl$and

$\lbrack Co(py)_{2}(H_{2}O)Cl_{3}\rbrack H_{2}O$show hydrate isomerism.