1. The problem statement, all variables and given/known data Explain the boiling points of HF, HCl, HBr nd HI 3. The attempt at a solution The boiling points are: HF: 20 C HCl: -85 C HBr: -67 C HI: -35 C The hydrogen bondings between H and F are stronger than other hydrogen bondings. Therefore HF has the highest boiling point. But then I'd expect the order to be HCl > HBr > HI; not the opposite. How can that be explained?