system
Given the following post, respond as if you're commenting on Reddit:
human
Atomic Orbital Theory, Molecular Orbital Theory, Valence Bond Theory.

What are the differences between these three theories?
gpt
All three are models of the wave-particle duality of electrons in an atom, and are essentially related to one another. Atomic orbital theory is used to describe the energetic nature of electrons in a single atom; molecular orbital theory (related to VB theory) qualifies these wave interactions between multiple atoms in a molecule with mathematical equations (the shapes assumed by the orbitals) and quantifies them in terms of energy (in the form of an energy diagram).

Source: student in inorganic chemistry. :)