Question

The shape of $Xe{O}_3$ molecule is __

Answer 1

Let us draw the Lewis structure for Xenon (VI) oxide or Xenon trioxide:


As we can see from the Lewis structure, there is one lone pair on the central atom and there are three atoms attached to the Xenon atom. Using VSEPR theory for a steric number = 3 bp + 1 lp = 4, we get a tetrahedral geometry and a pyramidal shape.