Hydrogen fluorine is a lipid unlike other hydrogen halides because

Options

A. Fluorine atom is smaller in size
B. HF is the weakest acid
C. Fluorine is highly reactive
D. HF molecules form intermolecular H-bonds.

Answer

D

Explanation

HF is a liquid at room temperature under 1 atm pressure. This is due to higher b.p. of HF than other hydrogen halides. Smaller size and highest electronegativity of F result in extensive intermolecular H-bonding in HF, which increases the b.p..