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Hitchcock Foundation Lectures: "The Development of the Concept of Chemical Bond." January 17, 1983. University of California, Berkeley. Research by Walter Heitler and Fritz London. (1:15)

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Linus Pauling: The same year Walter Heitler and Fritz London, I don't have the dates of their birth and death, both, they both died, carried out the treatment of the hydrogen molecule as involving resonance between two normal hydrogen atoms. You have an electron with positive spin on one and essentially the normal state 1s orbit and with negative spin on the other. But there's another structure were the two electrons have interchanged positions. The fact that you have two structures introduces the term that you can call a resonance integral in the energy and this is the prototype of the valence bond method. The actual structure of the hydrogen molecule is a sort of intermediate one, perhaps three-quarters the Heitler-London sort and well perhaps half-and-half, it has about, it has some, some of the Biro structure where the dual electrons are on the same atom or the Condon structure.

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Date: January 17, 1983
Genre: sound
ID: 1983v.2
Copyright: More Information

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