Question
The variation of the boiling point of the hydrogen halides in the order HF > HI > HBr > HCl. What explains the higher boiling point of hydrogen fluoride?
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The electronegativity of fluorine is much higher than for other elements in the group
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There is strong hydrogen bonding between HF molecules
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The bond energy of HF molecules is greater than in other hydrogens halides
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The effect of nuclear shielding is much reduced in fluorine which polarises the HF molecules
Solution
B.
There is strong hydrogen bonding between HF molecules
There is a strong hydrogen bonding between HF molecules. Hence, the boiling point is highest for HF.
HF > HI > HBr > HI
