Complex  X of composition  $\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{\mathrm{CI}}_{\mathrm{n}}$ has a spin only magnetic moment of 3.83 BM. It reacts with  ${\mathrm{AgNO}}_3$  and shows geometrical isomerism. The IUPAC nomenclature of X is :

$$\begin{gathered} \begin{array}{l}\text{μ=3.83B.M=}\sqrt{\text{15}}\text{B.M\hspace{0.17em}\hspace{0.17em}}\Rightarrow \text{n=3\hspace{0.17em}\hspace{0.17em}}\\ \text{μ=}\sqrt{\text{n}\left(\text{n+2}\right)}\end{array} \\ \to {\text{Cr}}^{\text{3+}}\to {\text{\hspace{0.17em}t}}^{1,1,1}{{ }_{\text{2}}}_{\text{g}}{{\text{\hspace{0.17em}e}}_{\text{g}}}^{\text{0,0}} \end{gathered}$$

It reacts with

It reacts with ${\text{AgNO}}_{\text{3}}\Rightarrow {\text{atleast\hspace{0.17em}1\hspace{0.17em}\hspace{0.17em}Cl}}^{\text{-\hspace{0.17em}}}\text{\hspace{0.17em}is\hspace{0.17em}outside\hspace{0.17em}\hspace{0.17em}}c\text{o-ordination\hspace{0.17em}\hspace{0.17em}sphere}$

G.I  . It should have atleast 2Cl inside co-ordination sphere 

$\text{Complex\hspace{0.17em}}\left[Cr{\left(H_{2}O\right)}_{4}C{l}_2\right]Cl.2H_{2}O$