Xenon is a noble gas and is nonpolar. It has no permanent dipole moment. The only intermolecular forces that act between xenon atoms are van der Waals forces. Van der Waals forces are weak intermolecular forces that arise from the temporary fluctuations in the electron clouds of atoms. These fluctuations create temporary dipoles, which can then induce dipoles in neighboring atoms. The strength of van der Waals forces increases with the number of electrons in the atom. Xenon has 54 electrons, so it has relatively strong van der Waals forces.