Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Van der Waals Forces: Generally, boiling point increases down a group as molecular size and van der Waals forces increase, leading to the trend: $HCl<HBr<HI$.

Hydrogen Bonding: HF forms exceptionally strong intermolecular hydrogen bonds due to the high electronegativity of fluorine.

Correct Trend: This strong hydrogen bonding gives HF the highest boiling point in its group, making the true order: $HCl<HBr<HI<HF$.