$\text{ Select the correct code about complex }\left[\mathrm{Cr}\left({\mathrm{NO}}_2\right){\left({\mathrm{NH}}_3\right)}_5\right]\left[{\mathrm{ZnCl}}_4\right]\text{ : }$
(I) IUPAC name of compound is pentaamminenitrito-N-chromium (III) tetrachlorozincate(Il)
(II) It shows geometrical isomerism
(III) It shows linkage isomerism
(IV) It shows coordination isomerism

(I) IUJPAC name is Pentaamminenitrito-N-chromium(Ill) tetrachlorozincate (II)
(II) It does not exhibit geometrical isomerism
$\text{ (III) It shows linkage isomerism due to presence of ambidentate ligand }{\mathrm{NO}}_2^{-}$
$\text{ (IV) Its coordination isomers are : }$
$$\begin{gathered} \left[\mathrm{CrCl}{\left({\mathrm{NH}}_3\right)}_5\right]\left[{\mathrm{ZnCl}}_3\left({\mathrm{NO}}_2\right)\right] \\ \begin{array}{l}\left[{\mathrm{CrCl}}_2{\left({\mathrm{NH}}_3\right)}_4\right]\left[{\mathrm{ZnCl}}_2\left({\mathrm{NO}}_2\right){\mathrm{NH}}_3\right]\\ \left[\mathrm{Zn}\left({\mathrm{NO}}_2\right){\left({\mathrm{NH}}_3\right)}_3\right]\left[{\mathrm{CrCl}}_4{\left({\mathrm{NH}}_3\right)}_2\right]\end{array} \end{gathered}$$