How do polar molecules form hydrogen bonds?

Only compounds with hydrogen bonds to N, O, or F have hydrogen bonds in polar molecules.

On the hydrogen, these extremely electronegative elements impart a partial positive charge.

The partial negative charge on an N, O, or F atom in another molecule attracts the H atom.

Although much weaker than true chemical bonds like ionic or covalent bonds, the hydrogen bond is still an attraction.

Nonetheless, the intermolecular hydrogen bond is a powerful one.

Polar molecules form hydrogen bonds through the attraction between the positively charged hydrogen atom in one molecule and the negatively charged region of another molecule, typically the lone pairs of electrons on an electronegative atom such as oxygen, nitrogen, or fluorine. This attraction results in a relatively strong dipole-dipole interaction known as a hydrogen bond.