Question

H2O or H-F , which one has more boiling point and why?

Answer 1

according to.me HF because. HF have H bonding due to small size and high electronegative nature of F than O

Answer 2

Water has more boiling point than HF, Though the strength of a single hydrogen bond in HF is stronger than in H2O but H2O is surrounded by 4 water molecules which form hydrogen bond with H2O whereas in HF, there is only a single HF molecule.

Long story short, H2O have greater number of hydrogen bonds per molecule as compared to HF.

Hope that helped. :)