Types of Intermolecular Forces

Three types of force can operate between covalent molecules:

  • Dispersion Forces

also known as London Forces (named after Fritz London who first described these forces theoretically 1930) or as Weak Intermolecular Forces or as van der Waal's Forces (namd after the person who contributed to our understanding of non-ideal gas behaviour).

  • Dipole-dipole interactions


  • Hydrogen bonds