Lecture · MIT
7. Aufbau Principle and Atomic Orbitals (Intro to Solid-State Chemistry)
MIT OpenCourseWare · Jeffrey C. Grossman
A full lecture from Jeffrey Grossman's MIT 3.091, Introduction to Solid-State Chemistry, devoted to the Aufbau principle and atomic orbitals: section 3's building-up procedure at university pace. Whenever orbitals are being filled, predict the next step yourself with the n + l rule first, remembering that 4s comes before 3d.