Select the molecule which is planar :

${\mathrm{XeF}}_4$Xenon tetrafluoride – XeF4 compound has a planar structure. In ${\mathrm{XeF}}_4$ the 'Xe' atom is sp3 d2 hybridized, which contains two lone pair orbitals and four bond pair orbitals. Therefore, the shape of the ${\mathrm{XeF}}_4$ molecule is square planar.

Hence, the option D is correct.