Dispersion forces are 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.
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Dispersion forces are attractions that occur due to the random electronic motion within all substan...
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