The correct order of solubility in water for $H e, N e, A r, K r, X e$ is:

X e > K r > A r > N e > H e

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A r > N e > H e > K r > X e

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H e > N e > A r > K r > X e

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N e > A r > K r > H e > X e

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Solution

The correct option is A $X e > K r > A r > N e > H e$
The correct order of solubility in water for $H e, N e, A r, K r, X e$ is $X e > K r > A r > N e > H e .$ 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.

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X e > K r > A r > N e > H e

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