Give reasons :
(i) Xenon does not form fluorides such as `XeF_(3) and XeF_(5)`.
(ii) Out of noble gases, only xenon is known to form established chemical compounds.

Explanation

(i) All the filled orbitals of Xe have paired electrons. The promotion of one, two or three electrons from the 5 p-filled orbitals to the 5 d-vacant orbitals will give rise to two, four and six half-filled orbitals respectively. So Xe can combine with even but not odd number of F atoms. Hence, it cannot form `XeF_(3) and XeF_(5)`.
(ii) Except radon which is radioactive, Xe has lowest ionization enthalpy among noble gases and hence it readily forms chemical compound with strong oxidising agents such as `O_(2) and F_(2)`.