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Statement - I : Among hydrogen halides, hydrogen fluoride is least volatile
Statement - II : Hydrogen fluoride molecules are associated with hydrogen bonding

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Both statements I and II are correct

Statement-I is correct and statement-II is incorrect

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

answer is A.

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Detailed Solution

In covalent compounds, the boiling point increases with increase of molecular mass as van der Waals' forces increase.

The volatility thus, decreases in covalent compounds with increase in molecular mass. However, hydrogen bonding is present in HF.

Due to which, the boiling point of HF is higher and the volatility is less.

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