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| Column-$I$ | Column-$II$ |
| $(A)$ $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right)_2\right] \mathrm{Cl}_2$ | $(p)$ geometrical isomers |
| $(B)$ $\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]$ | $(q)$ paramagnetic |
| $(C)$ $\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}\right] \mathrm{Cl}$ | $(r)$ diamagnetic |
| $(D)$ $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_2$ | $(s)$ metal ion with $+2$ oxidation state |
$A.$ $Cl _{2} / Cl^{-}$ $B.$ $I _{2} / I^{-}$ $C.$ $Ag ^{+} / Ag$ $D.$ $Na ^{+} / Na$ $E.$ $Li ^{+} / Li$
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