Intermolecular Forces (IMFs)

Definition

Intermolecular forces are forces that mediate interaction between molecules, including forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions).

Related terms

Van der Waals Forces: Weak attractive forces existing between neutral atoms and molecules.

Hydrogen Bonding: A special type of IMF that exists when a hydrogen atom bonded to a highly electronegative atom exists in proximity to another electronegative atom with a lone pair of electrons.

Dipole-Dipole Interaction: Attractive force between polar molecules; occurs when positive end of one polar molecule attracts negative end of another.