Its strength is roughly proportional to the (*) polarizability.
The Tang-Toennies model provides a damping function for this interaction. The original derived potential of this interaction includes a term for negative three-halves times the geometric mean of two ionization energies. The potential energy of this interaction is proportional to distance raised to the negative sixth power and is negative in the Lennard-Jones potential. Its strength is roughly proportional to the (*) polarizability. This interaction explains why bromine is liquid at room temperature but chlorine is a gas, because it is stronger for compounds with larger electron clouds. For 10 points, name this interaction which forms due to induced dipoles in uncharged compounds, a class of van der Waals forces.
The Tang-Toennies model provides a damping function for this interaction.
London dispersion forces [or London dispersion forces; prompt on van der Waals forces before it is read]