What intermolecular forces are present in iodine crystals?

the intermolecular forceat work between iodine molecule is known as van der waal forces (aka london dispersion forces). this can be determined by looking at an iodine molecule. In the molecule two iodine atoms "pull" in opposite but equal directions. this causes the molecule to have no polarity. since there isno polarity the force cannot be dipole-dipole, and no there is nothing in the molecule to cause hydrogen bonding; therefore, the molecule must have only dispersion forces at work when interacting with other molecules.