The variation of the boiling points of the hydrogen halides is in the order $H F > H I > H B r > H C l$
What explains the higher boiling point of hydrogen fluoride?

There is strong hydrogen bonding between HF molecules.

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The bond energy of HF molecules is greater than in other hydrogen halides.

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The effect of nuclear shielding is much reduced in fluorine which polarises the HF molecule.

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The electronegativity of fluorine is much higher than for other elements in the group.

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Solution

The correct option is A There is strong hydrogen bonding between HF molecules.
HF forms strong intermolecular H- Bonding due to high electronegativity of F . Hence, the boiling point of HF is abnormally high. Boiling points of other hydrogen halides gradually increase from HCI to HI due to increase in size of halogen atoms from CI to I which further increase the magnitude of van der waals forces.

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Similar questions

Q. The variation of the boiling points of the hydrogen halides is in the order

H F > H I > H B r > H C l

. What explains the higher boiling point of hydrogen fluoride?

Q. Boiling point of hydrogen fluoride is highest amongst

H F, H C l, H B r

and

H I

. Which type of intermolecular forces are present in hydrogen fluoride?

Use the information and date given below to answer the question (a) to (c),

Stronger intermolecular forces result in higher boiling point.

Strength of London forces increases with the number of electrons in the molecule.

Boiling point of HF,HCl, HBr and Hi are 293 k, 189 k, 206 k and 238 k respectively.

(a) Which type of intermolecular forces are present in the molecules HF, HCl, HBr an HI?

(b) Looking at the trend of boiling points of HCl, HBr and HI, explain out of dipole-dipole interaction and London interaction, which one is predominant here.

Q. Although the hydrogen bonding in hydrogen fluoride is much stronger than in water, yet water has a much higher boiling point than hydrogen fluoride. Explain.

Q. The boiling points of

H F, H C l, H B r

and

H I

follows the order:

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The variation of the boiling points of the hydrogen halides is in the order HF>HI>HBr>HCl What explains the higher boiling point of hydrogen fluoride?

The variation of the boiling points of the hydrogen halides is in the order $H F > H I > H B r > H C l$
What explains the higher boiling point of hydrogen fluoride?