Theoretical chemistry is the branch of chemistry which develops theoretical generalizations that are part of the theoretical arsenal of modern chemistry: for example, the concepts of chemical bonding, chemical reaction, valence, the surface of potential energy, molecular orbitals, orbital interactions, moleculeheoretical chemistry tries to explain data from chemistry experimentsThe study of chemistry is enhanced by computer applications from the recent surge in technology. As a forerunner in computer science among universities, Stanford combines computational and chemical science, leading to new discoveries, interdisciplinary programs and Nobel Prizes It also predicts chemical properties (characteristics) of molecules. An important part of theoretical chemistry is quantum chemistry. This is using quantum mechanics to understand valency (the number of bonds formed by an atom of an element).