This course is designed to introduce quantum chemistry including electronic structures and molecular spectroscopy. Topics include: historical background of quantum mechanics, the Schrödinger wave equation and simple applications, postulates of quantum mechanics, the harmonic oscillator, the rigid rotor and angular momentum, the hydrogen atom, the variational method and perturbation theory, many-electron atoms, the simple MO and VB description of hydrogen molecules, hybrid and molecular orbitals for polyatomic molecules, the Hückel and extended Hückel molecular orbital method, rudimentary molecular spectroscopy.