Find the total number of species which are planar.

$\begin{array}{r}{\mathrm{I}}_3^{+},{\mathrm{XeF}}_4,{\mathrm{SF}}_4,{\mathrm{C}}_2{\mathrm{F}}_4,{\mathrm{H}}_2{\mathrm{O}}_2,{\mathrm{BrF}}_4^{-},{\mathrm{SO}}_3,\mathrm{NOCl},{\mathrm{ClF}}_3,{\mathrm{F}}_2\mathrm{CO},{\mathrm{XeF}}_5^{-}\end{array}$

The species having planner structure is, ⁣${\mathrm{I}}_3^{+},{\mathrm{XeF}}_4,{\mathrm{C}}_2{\mathrm{F}}_4,{\mathrm{BrF}}_4^{-},{\mathrm{SO}}_3,\mathrm{NOCl},{\mathrm{ClF}}_3,{\mathrm{F}}_2\mathrm{CO},{\mathrm{XeF}}_5^{-}$

The shape of ${\mathrm{XeF}}^4$ is square planar. Four electron bond pairs and two lone pairs make up the center Xe atom. Octahedral electron geometry and square planar molecular geometry are produced as a result of ${\mathrm{sp}}^3{\mathrm{d}}^2$ hybridization. 

It is thought that a molecule with linear geometry is planar.

Hence, the total number of species which are planar are 9.