Intermolecular forces - ion / electron


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We already know that the electrons in the orbitals of molecules are free to move around.  As such, if you would compare a "snapshots" of a molecule at an instant in time, you would see that there would be slightly different charge distributions caused by the different positions of the electrons in the orbitals.  Just how much difference one sees as a function of time is based on the polarizability of the molecule, which is a measure of how well electrons can move about in their orbitals.  In general, the polarizability increases as the size of the orbital increases; since the electrons are further out from the nucleus they are less strongly bound and can move about the molecule more easily.



Intermolecular Forces - Ion / ElectronIntermolecular Forces - Ion / ElectronIntermolecular Forces - Ion / ElectronIntermolecular Forces - Ion / Electron