The Lennard-Jones potential describes long-range attraction and short-range repulsion. In both solids, liquids, and gases there are attractions and repulsions.

1. Does it mean that Lennard-Jones form of potential is applicable to any phase of a substance?

2. If yes, does the attractive and repulsive parts of the potential have the same origin in all phases?

The Lennard-Jones potential describes long-range attraction and short-range repulsion. In both solids, liquids, and gases there are attractions and repulsions.

1. Does it mean that Lennard-Jones form of potential is applicable to any phase of a substance?

2. If yes, does the attractive and repulsive parts of the potential have the same origin in all phases?