# Van der Waals'

by geoffreythelm
Tags: waals
 P: 623 The second part is asking you for the variation of potential (attractive term) with respect to the distance between the particles, so for the van der Waals' forces, the Lennard-Jones potential applies, while for the ionic forces, the Coulomb potential applies. This would give $$\beta$$ as 6 for the former and 1 for the latter.