Br2 exhibits London dispersion forces because diatomic elements are nonpolar and nonpolar molecules are only capable of forming temporary dipoles. CCl4 also exhibits London dispersion Force of attraction.
The London dispersion force is a temporary attractive force that results when electrons in two adjacent atoms occupy positions that results in atoms forming temporary dipoles. This force is also called induced dipole-induced dipole attraction.
London dispersion forces are the type of intermolecular force acting between atoms and molecules that are electrically symmetric; that is, electrons are symmetrically distributed with respect to nucleus. London dispersion force depends on the atomic or molecular weight of material.
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