### Interaction Potential Energy

Posted:

**Sun Nov 17, 2019 10:25 pm**Does anyone know if the interaction potential energy equation will be on the test? If so, what is an example of a problem where you would have to use it?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=39&t=52038

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Posted: **Sun Nov 17, 2019 10:25 pm**

Does anyone know if the interaction potential energy equation will be on the test? If so, what is an example of a problem where you would have to use it?

Posted: **Mon Nov 18, 2019 2:49 pm**

No calculations, but understand the concept, which is that greater distance will lead to a PE of 0 (no interaction), and greater polarizability of the two atoms will lead to a more negative PE (as there is a negative sign in front of the equation, and negative PE is favored).

Posted: **Mon Nov 18, 2019 3:16 pm**

Although calculations are not going to be tested, you should understand that Interaction potential energy is proportional to -(alpha1)*(alpha2)/(r^6)

where alpha is polarizability and r is the distance between the molecules.

where alpha is polarizability and r is the distance between the molecules.