The postulates of Qantum Mechanics and bra/ket notation and perturbation theory are introduced. Quantum mechanics is then applied to one electron atoms, multielectron atoms, magnetic dipole moments, selection rules, optical transitions, Einstein A & B coefficients, simple laser theory, line broadening mechanisms, nuclear models and nuclear decay (alpha, beta and gamma decay). Prior Assumed: 2305NSC Quantum Mechanics, Relativity and Elementary Particles, 2205NSC Calculus II