London Dispersion Forces

016 - London Dispersion Forces
In this video Paul Andersen describes the positive force intermolecular forces found between all atoms and molecules. As electrons are distributed unevenly it creates instantaneous dipoles which hold molecules together. This force even holds uncharged atoms (like Noble gases) together. London dispersion forces increase as surface area, molecule sizing and pi bonding increases.
Music Attribution
Title: String Theory
Artist: Herman Jolly
sunsetvalley.bandcamp.com/trac...
All of the images are licensed under creative commons and public domain licensing:
File:Bunsen-Tagung 1928 Ausschnitt.jpg, n.d. commons.wikimedia.org/wiki/Fil....
"File:Myoglobin.png." Wikipedia, the Free Encyclopedia. Accessed August 9, 2013. en.wikipedia.org/wiki/File:Myo....
"File:Neopentane 3D 1.png." Wikipedia, the Free Encyclopedia. Accessed August 9, 2013. en.wikipedia.org/wiki/File:Neo....
"File:Pentane-3D-space-filling.png." Wikipedia, the Free Encyclopedia. Accessed August 9, 2013. en.wikipedia.org/wiki/File:Pen....
"File:Pentane-3D-space-filling.png." Wikipedia, the Free Encyclopedia. Accessed August 9, 2013. en.wikipedia.org/wiki/File:Pen....
en.wikipedia.org/wiki/File:2_H..., n.d.

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btw. is london dispersion force the same as dispersion force?

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Yes, these are actually dispersion forces named after their founder Fritz London

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hermest99: On average there would be as many repulsions as attractions. However, attractions move the charges closer thus increasing the attraction whereas repulsions move the charges away diminishing the repulsion. This results in a net attraction. Further this can result in a resonance effect between the molecules that stabilizes the attraction. Google "the strengths of van der waals dispersion forces" to find an excellent explanation of this.

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