Match List-I with List-II : $\begin{array}{|l|l|} \hline \begin{array}{c} \text{List-I} \\…

Match List-I with List-II : $\begin{array}{|l|l|}
\hline \begin{array}{c}
\text{List-I} \\
\text{(Complexes)}
\end{array} & \begin{array}{c}
\text{List-II} \\
\text{(Types)}
\end{array} \\
\hline (a) \left[\mathrm{CO}\left(\mathrm{NH}_3\right)_5 \mathrm{NO}_2\right] \mathrm{Cl}_2 & \text{(i) } \text{ionisation} \\
\text{and} \left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{ONO}\right] & \text{isomerism} \\
\mathrm{Cl}_2 & \\
\hline (b) \left[\mathrm{Cr}\left(\mathrm{NH}_3\right)_6\right]\left[\mathrm{CO}(\mathrm{CN})_6\right] & \text{(ii) } \text{coordination} \\
\text{and } \left[\mathrm{Cr}(\mathrm{CN})_6\right] & \text{isomerism} \\
{\left[\mathrm{CO}\left(\mathrm{NH}_3\right)_6\right]} & \\
\hline (c) \left[\mathrm{CO}\left(\mathrm{NH}_3\right)_5\left(\mathrm{SO}_4\right)\right] \mathrm{Br} \text{ and} & \text{(iii) } \text{linkage} \\
{\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Br}^2\right] \mathrm{SO}_4} & \text{isomerism} \\
\hline (d) \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3 \text{ and} & \text{(iv) } \text{solvate} \\
{\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_2 \cdot \mathrm{H}_2 \mathrm{O}} & \text{isomerism} \\
\hline
\end{array}$ Choose the correct answer from the options given below :
  1. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
  2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  3. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Solution

(a) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{NO}_2\right] \mathrm{Cl}_2$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{ONO}\right] \mathrm{Cl}_2$ - linkage Isomerism due to difference in binding site.

(b) $\left[\mathrm{Cr}\left(\mathrm{NH}_3\right)_6\right]\left[\mathrm{Co}(\mathrm{CN})_6\right]$ and $\left[\mathrm{Cr}(\mathrm{CN})_6\right]\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]$ - It is an example of coordination Isomerism due to exchange of ligands between the two coordination spheres. (c) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{SO}_4\right)\right] \mathrm{Br}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Br} \mathrm{SO}_4\right.$ - It is an example of Ionisation Iosmerism arising due to formation of different ions due to ionisation. The case arises due to exchange of ions between the coordination sphere and ionisation sphere. (d) $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3$ and $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_2 \cdot \mathrm{H}_2 \mathrm{O}$ - It is an example of solvate isomerism arising due to difference in $\mathrm{H}_2 \mathrm{O}$ molecules acting as potential ligand and as water of crystallisation.

Asked in: NEET 2022 (Phase 2)

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