Rodrigo

studiot, thanks for the reply. That really helped me. But the text that I've highlighted is not clear to me. Can you explain again ? That is not clear for me yet why repulsion has a bigger dependence with distance (r^-12) than attraction (r^-6). Mathematically is easy to see why, but I do not understand the physical meaning behind it. Another question: do you know any book/paper which show these effects ? Thanks.

Hi, everyone. I'm studying about the potential energy of chemical bonds and I want to know more about the attractive and repulsive terms of Lennard-Jones potential. What is the origin of repulsive part ? Anyone knows any material that explain that ? For example, the equation of attractive part can be derived from van der Waals forces which has 1/r^6 dependence. Thanks.