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Assertion (A) The boiling points of noble gases increases from He to Xe.
Reason (R) The interatomic van der Waals' attractive forces increases from $\mathrm{He}$ to $\mathrm{Xe}$.
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Reason (R) The interatomic van der Waals' attractive forces increases from $\mathrm{He}$ to $\mathrm{Xe}$.
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Both (A) and (R) are true, and (R) is the correct explanation of (A)
As the size of noble gases increases from He to Xe, van der Waals' forces increases and due to which boiling point increases.
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