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 ?

Question

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 ? (A) The bond energy of HF molecules is greater than in other hydrogen halides (B) The effect of nuclear shielding is much reduced in fluorine which polarises the HF molecule (C) The electronegativity of fluorine is much higher than for other elements in the group. (D) There is strong hydrogen bonding between HF molecules

Tardigrade Admin · Accepted Answer

Due to strong H-bonding in HF molecule, boiling point is highest for HF HF > HI > HBr > HI

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

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

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

There is strong hydrogen bonding between HF molecules

Due to strong H-bonding in HF molecule, boiling point is highest for HF HF > HI > HBr > HI

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

Due to strong H-bonding in HF molecule, boiling point is highest for HF
HF > HI > HBr > HI