The last member of inert gas elements is

Explain the variations in the following properties of group $18$ elements:
$(i)$ Atomic radii
$(ii)$ Ionisation enthalpy
$(iii)$ Electron gain enthalpy

Select the $INCORRECT$ statement regarding the following reactions:
$XeF_6 + \text{excess } H_2O \rightarrow 'X' + HF$
$XeF_6 + 2 \text{ moles } H_2O \rightarrow 'Y' + HF$

The solubility of noble gases in water is fairly high due to

Which of the following chemical reactions of xenon is $NOT$ correct?

Noble gases have very low boiling points. Why?