Question

Do both HF and NH3 have london-dispersion forces, dipole-dipole and hydrogen bonding?

Answer 1

All of these intermolecular forces operate in hydrogen fluoride, and ammonia.

Explanation:

While all of these forces operate, hydrogen bonding is the most significant intermolecular force that operates. Consider the boiling points of `NH_3`, and `HF`; `-33` `""^@C`, and `19.5` `""^@C`, and boiling point is probably the best indicator of intermolecular force.

Both pure ammonia and pure hydrogen fluoride have their own particular acid/base chemisty that may be compared with the `OH^-, H_3O^+` couple that operates in water.