## Chemistry: Molecular Approach (4th Edition)

The boiling point of $HF$ is higher than $HCl$ due to hydrogen bonding in $HF$.
$HF$ is able to form hydrogen bonds because $H$ is bonded to a strongly electronegative element, $F$. The hydrogen bond is the strongest intermolecular force and requires a lot of energy to break. So, the boiling point of $HF$ is higher than $HCl$.