How many geometrical isomers are possible for this compound?
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$(I)\, CO_3^{-2}$ $(II)\,XeF_4$
$ (III)\,I_3^- $ $(IV)\,NCl_3$
$(V)\,BeCl_2$
$\mathrm{A}(\mathrm{g}) \rightarrow 2 \mathrm{~B}(\mathrm{~g})+\mathrm{C}(\mathrm{g})$
If the total pressure of the gases is found to be $200$ torr after $23 \mathrm{sec}$. and $300$ torr upon the complete decomposition of $\mathrm{A}$ after a very long time, then the rate constant of the given reaction is . . . . . .$\times 10^{-2} \mathrm{~s}^{-1}$ (nearest integer)
[Given : $\log _{10}(2)=0.301$ ]
Statement $I :$ In $CuSO _{4} .5 H _{2} O , Cu - O$ bonds are present.
Statement $II :$ In $CuSO _{4} .5 H _{2} O$, ligands coordinating with $Cu$ $(II)$ ion are $O$-and $S$-based ligands.
In the light of the above statements, choose the correct answer from the options given below