Find the number of chemical species which are planar and${\mathrm{d}}_{\mathrm{xy}}$ orbital of central atom participates in the hybrtdisation :

${\mathrm{XeF}}_5^{-},{\mathrm{XeF}}_5^{+},{\mathrm{XeF}}_6,{\mathrm{XeF}}_4,{\mathrm{SF}}_4,{\mathrm{ICl}}_4^{-}$

In ${\mathrm{XeF}}_5^{-}$,

The form is planar because lone pairs are present axially to reduce the repulsion.

In this${\mathrm{d}}_{\mathrm{xy}}$ orbital of central atom participates in the hybridisation.