Hydrogen bonding refers to the formation of Hydrogen bonds, which are a special class of attractive intermolecular forces that arise due to the dipole-dipole interaction between a hydrogen atom that is bonded to a highly electronegative atom and another highly electronegative atom which lies in the vicinity of the hydrogen atom.
Examples of hydrogen bonding
Examples of molecule to show hydrogen bondings are
Hydrogen is covalently bound to the more electronegative oxygen atom in water molecules (H2O). As a product of dipole-dipole interactions between the hydrogen atom of one water molecule and the oxygen atom of another H2O molecule, hydrogen bonding occurs in water molecules.
Hydrogen bonding in Ammonia
Ammonia contains highly electronegative atom nitrogen linked to hydrogen atoms.