Intermolecular Forces

Intermolecular Forces Definition:

Intermolecular forces are the attractive forces between molecules.

Intermolecular Forces Explained:

Intermolecular forces help us determine the bulk properties of matter. For example, boiling of a liquid or melting of solid is governed by the strength of intermolecular forces. It is only when the molecules acquire enough thermal energy to break the forces that the liquid boils or the solid melts. Since intermolecular forces are governed by the distance between the molecules, it is not important for gases. Obviously, expect under ideal conditions.

Also, intermolecular forces are electrostatic in nature i.e they arise as a result of attraction between opposite charges.

Examples of intermolecular forces include

  • dipole-dipole interactions
  • ion-dipole interactions
  • hydrogen bonding
  • van der walls forces