In this lecture I explain the formation of atomic sublevels, how scientists arrived at their discovery, and why the existence of these sublevels have caused scientist to abandon the Borh-Rutherford model for an atomic model that is far superior in its ability to explain the interactions of atoms. I also make clear how to describe these orbital sublevels through the use of quantum numbers. Included in this video are concepts such as the Quantum Mechanical Model of the Atom, the Uncertainty Principle, the Wave Equation, probability distribution graphs, the Pauli exclusion principle, and Hund’s Rule.