The correct order of enthalpy of vaporization of noble gases is

$$\begin{gathered} \mathrm{Enthalpy} \mathrm{of} \mathrm{vaporization} \propto \mathrm{Van} \mathrm{der} \mathrm{Waals} \mathrm{forces} \propto \mathrm{Atomic} \mathrm{size} \\ \mathrm{Hence} , \\ \mathrm{Enthalpy} \mathrm{of} \mathrm{vaporization} :\mathrm{Xe} > \mathrm{Kr} > \mathrm{Ar} > \mathrm{Ne} > \mathrm{He} \end{gathered}$$