Dispersion forces are ___________electrostatic attractions that occur due to the random electronic motion within all substances, _ those that are nonpolar. When the electrons within a molecule or atom are distributed asymmetrically about the nucleus, that molecule or atom will adopt a _, _ dipole. The presence of this dipole can then distort the electrons of a neighboring atom or molecule, producing an ___ dipole. These two rapidly fluctuating dipoles thus result in a brief electrostatic _ between the two species. These forces are stronger in ________________ atoms and molecules. For example, dispersion forces between iodine molecules will be stronger than dispersion forces between fluorine molecules.

Dispersion forces are weak____electrostatic attractions that occur due to the random electronic motion within all substances, such as those that are nonpolar. When the electrons within a molecule or atom are distributed asymmetrically about the nucleus, that molecule or atom will adopt a shortlived, instantaneous _ dipole. The presence of this dipole can then distort the electrons of a neighboring atom or molecule, producing an _induced__ dipole. These two rapidly fluctuating dipoles thus result in a brief electrostatic _attraction_ between the two species. These forces are stronger in larger and weighty_ atoms and molecules. For example, dispersion forces between iodine molecules will be stronger than dispersion forces between fluorine molecules.