The number of paired electrons around Xe in ${\mathrm{XeO}}_3$ is

Below is a diagram of the ${\mathrm{XeO}}_3$ Lewis structure. There are four electron groups surrounding Xe. Although three of the electron groups have double bonds, only one pair of these double bonds is taken into account for establishing the geometry of electron pairs. As a result, Xe has a tetrahedral electron-pair geometry because it is surrounded by four electron pairs.