Identify the principal intermolecular force in the following…

Identify the principal intermolecular force in the following halogens: Cl2, Br2, or I2. Then, place them in order of the weakest to strongest intermolecular forces. Submit your response using the text editing tools in the box below. Intermolecular force:   Dipole-dipole (order weakest to strongest intermolecular forces):