Potential energy

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Potential energy

Postby salvadorramos3k » Thu Nov 21, 2019 4:13 am

Can somebody please explain the parameters of intermolecular energy in E is proportional to (-alpha1alpha2/r^6)?

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Re: Potential energy

Postby Veronica_Lubera_2A » Thu Nov 21, 2019 9:08 am

Alpha stands for polarizability and r stands for distance. So, intermolecular forces depend on the strength of an atom to distort electrons as well as how far the two atoms/molecules are away from each other.

Justin Sarquiz 2F
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Re: Potential energy

Postby Justin Sarquiz 2F » Thu Nov 21, 2019 9:29 am

Since the r is to the power of 6, the distance has the most impact on the potential energy of a molecule. In other words, the potential energy is strongly dependent on the distance between atoms.

Ariana Iranmahboub1G
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Re: Potential energy

Postby Ariana Iranmahboub1G » Thu Nov 21, 2019 9:51 am

It is also good to know that polarizability (alpha) depends on the number of electrons and the size of the atom/molecule. So the greater the size and the number of electrons the molecule has, the greater polarizability it has. These electrons in the atom or molecule is what causes the electron distortions in nearby atom or molecule.

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