Why is the molecule's orientation with an electric field affect polarizability? Electrons are diffuse enough to be independent with respect to orientation and effect of electric field on polarizability? Why is icosahedral independent of how it faces with the electric field in respect to polarizability?
How to explain "Molecular orientation with respect to an electric field can affect polarizibility (labeled Orientation-dependent), except for molecules that are: tetrahedral, octahedral or icosahedral (labeled Orientation-independent). This factor is more important for unsaturated molecules that contain areas of electron-dense regions, such as 2,4-hexadiene. Greatest polarizability in these molecules is achieved when the electric field is applied parallel to the molecule rather than perpendicular to the molecule."
Well, imagine some external electric field
Due to positive charges.
This will then attract electons closer to the source, and leave positive charge on the
Other side.
Thats the definition of polarization.
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