The variation of the boiling points of the hydrogen halides is in the order `HFgtHIgtHBrgtHCl`.
What explains the higher boiling point of hydrogen fluoride?

Options

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

Answer

A

Explanation

There is a strong hydrogen bonding in the molecules of HF because of maximum electronegativity difference between F and H atoms.