An introduction to quantum mechanics and its application to atomic and molecular systems. Topics include the postulates of quantum mechanics, solutions of the Schrödinger equation for model systems, and the quantum mechanical description of atomic and molecular structure. Applications to spectroscopy will be emphasized, including rotational, vibrational, electronic, and magnetic resonance spectroscopy. The course also introduces chemical kinetics, including rate laws, reaction mechanisms, temperature dependence of reaction rates, and theories of reaction dynamics. Emphasis will be placed on mathematical formulation, physical interpretation, and quantitative problem-solving relevant to modern chemical science. Prerequisite: Successful completion (C- or better) of CHEM 451 and lab. Co-requisite: CHEM 452L lab, 1 credit hour. Spring Even Years.