How to deduce the bond energy/distance relation (with grah)?

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    Bond Relation
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The discussion focuses on deducing the bond energy and distance relation, noting that the potential energy for opposite charges is represented as -k/r, but the graph in question is more complex. It highlights the role of quantum mechanics, particularly the Pauli exclusion principle, which causes electron wavefunction overlap at small separations, leading to significant repulsion and energy requirements. The conversation mentions that evaluating this phenomenon generally is challenging, prompting the use of approximations like the Lennard-Jones potential. Participants seek clarity on the formula and other potential energies involved. The complexities of bond energy calculations are acknowledged, emphasizing the need for simplified models in understanding these interactions.
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At small separations, the electron wavefunctions begin to overlap. Due to quantum mechanics (in particular, the Pauli exclusion principle), this requires a lot of energy, and leads to a repulsion. This is hard to evaluate in a general way, so approximations like the Lennard-Jones potential are used.
 
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