The Schrodinger Equation; the Particle in a box; Operators; the Harmonic oscillator; Angular Momentum; the Hydrogen Atom; Theorems of Quantum Mechanics; the Variation Method; Perturbation Theory; Electron Spin and the Spin Statistics Theorem; Many-electron Atoms; Molecular Symmetry; Electronic Structure of Diatomic molecules; Theorems of Molecular Quantum Mechanics; Molecular electronic Structure; Electron-Correlation Methods; Semiempirical and molecular-Mechanics Treatments of Molecules;