Noble gases have completely filled valence shell i.e. ns2np6, except  He (1s2). Noble gases are monoatomic under norrnal conditions.Low boiling points of the lighter noble gases are due to weak van der Waals forces between the atoms and absence of any interatomic interactions. Xe reacts with F2 to give a series of fluorides namely XeF2, XeF4, XeF6. XeF6 on complete hydrolysis gives XeO3. Structure of XeF4 isOxidation state of Xe in XeF2 is