The correct order of solubility in water for He, Ne, Ar, Kr, Xe is

The correct order of solubility in water for He, Ne, Ar, Kr, Xe is Xe>Kr>Ar>Ne>He. Solubility increases with increase in the atomic number on moving down the group due to increase in the intermolecular attraction between inert gas molecules and water molecules. Inter-molecular attractions depend on the atomic size and increase with the increase in atomic size and mass.