A metal complex with a formula MCl_4 · 3 NH_3 is involved in sp^3 d^2 hybridisation. It upon reaction with excess of AgNO_3 solution gives ' x '…

A metal complex with a formula $\displaystyle \mathrm{MCl}_4 \cdot 3 \mathrm{NH}_3$ is involved in $\displaystyle \mathrm{sp}^3 \mathrm{~d}^2$ hybridisation. It upon reaction with excess of $\displaystyle \mathrm{AgNO}_3$ solution gives ' $\displaystyle x$ ' moles of AgCl . Consider ' $\displaystyle x$ ' is equal to the number of lone pairs of electron present in central atom of $\displaystyle \mathrm{BrF}_5$. Then the number of geometrical isomers exhibited by the complex is $\displaystyle \_\_\_\_$.