Find the number of compounds of$\mathrm{Xe}$ which is/are associated with 180° bond angles.

${\mathrm{XeF}}_2,{\mathrm{ICl}}_2^{-},{\mathrm{I}}_3^{-},{\mathrm{XeF}}_4,{\mathrm{XeO}}_6^4,{\mathrm{XeO}}_4,{\mathrm{XeCl}}_4,{\mathrm{TeCl}}_4$

 Compounds of$\mathrm{Xe}$ which are associated with 180° bond angles,

${\mathrm{XeF}}_2,{\mathrm{XeF}}_4,{\mathrm{XeO}}_6^{4-},{\mathrm{XeCl}}_4$

A linear compound called${\mathrm{XeF}}_2$ has a 180 degree $\mathrm{F}-\mathrm{Xe}-\mathrm{F}$ angle.