What does the graph of potential energy versus internuclear distance reveal about the interaction between atoms in a chemical bond?

The graph of potential energy versus internuclear distance shows how the energy changes as the distance between atoms in a chemical bond varies. It reveals important information about the strength and stability of the bond, as well as the equilibrium distance at which the atoms are most stable. The shape of the curve can indicate the type of bond (e.g. covalent, ionic) and the overall energy required to break or form the bond.