The course will discuss the failures of classical mechanics and will introduce the students to photoelectric effect, Compton effect, wave-particle duality of light, and Heisenberg’s Uncertainty Principle as well as the Bohr atom. The course will consider the postulates and general principles of quantum mechanics, three-dimensional systems, perturbation theory, and the particle in a box. Other topics will include the hydrogen atom, multi-electron atom, molecular spectroscopies and their selection rules. Prerequisite: students are expected to take Level 100 and 200 Mathematics courses in Further Calculus and Differential Equations.