Among noble gases, Xe is quite reactive and form a number of fluorides and Oxyfluorides. By comparing between the ionization energy of Oxygen and Xenon, Bartlett thought that if O₂ may form 

O₂⁺[PtF₆]^– then similar compound of Xe must be there. He obtained a red solid by action of Xe on PtF₆. Now Xenon compounds are common and in these compound the electrons from 5p orbitals are excited to 5d orbitals. The predicated shapes of Xenon fluorides are linear, square planar and pentagonal bipyramidal. The shapes of Xenon Oxyfluorides can be predicated by VSEPR theory.