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London dispersion force
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<p>London dispersion forces (LDF, also known as dispersion forces, London forces, instantaneous dipole–induced dipole forces, fluctuating induced dipole bonds or loosely as van der Waals forces) are a type of <a href="/facts/Intermolecular_force/xIcFMvL7">intermolecular force</a> acting between <a href="/facts/Atom/FoQ4kGN5">atoms</a> and <a href="/facts/Molecule/N9ljSfFq">molecules</a> that are normally electrically symmetric; that is, the electrons are symmetrically distributed with respect to the nucleus. They are part of the <a href="/facts/Van_der_Waals_force/jyGU8Vh9">van der Waals forces</a>. The LDF is named after the German physicist <a href="/facts/Fritz_London/9NvJ4MR7">Fritz London</a>. They are the weakest of the <a href="/facts/Intermolecular_forces/xIcFMvL7">intermolecular forces</a>. </p>