Answer to Question #10242 in Physical Chemistry for Leah
Which compound has molecules that form the strongest hydrogen bonds
The strongest hydrogen bonds are formed between molecules in which hydrogen is covalently bonded to an element with high electronegativity and small atomic radius, such as F in HF. or O in H2O. The small radius of F or O gives a stronger attraction between the positive nucleus and the shared pair of electrons between the non metal and the Hydrogen atom, thus making the positive nucleus on the hydrogen able to exert its positive charge more strongly toward a neighboring molecule.