Answer to Question #165839 in Physics for Hoang Minh Quan

Question

Q: Bindings in crystalline materials - Van Der Waals interaction

Consider the interaction between two identical atoms of one inert gas.

+) The attraction energy between two atoms varies as the minus sixth power of the separation of the two atoms: E_attraction = -A/R6.

1> Plot the attraction energy as a function of separation distance R? Explain why we have this attraction interaction?

+) The repulsion energy between two atoms is in the form E_repulsion = B/R12.

2> Plot repulsion energy as a function of separation distance R? Explain why we have this repulsion interaction between two atoms?

3> Plot the total energy (Lennard-Johns potential) as a function of separation distance R?

Answer 1

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