The boiling points of HF, H2O and NH3 increase in the order of?

A. NH3
B. H2O < HF
C. HF < NH3 < H2O
D. NH3 < HF < H2O

Correct Answer: Option D

Explanation

Ammonia = -33.34°C; Hydrogen fluoride = 19.5°C; Water = 100°C