Introduction to Atomic Term Symbols

Understanding how electrons populate atomic orbitals is key to unlocking the secrets of chemical spectroscopy and quantum mechanics. This text-based course demystifies atomic term symbols, breaking down complex quantum numbers into clear, accessible concepts. By the end of this course, you will transition from simply writing basic electron configurations to confidently deriving term symbols for various states, allowing you to predict spectroscopic transitions and ground states with ease. What you will learn: Understand the fundamental quantum numbers and their physical significance; Apply Russell-Saunders coupling to find total orbital and spin angular momenta; Determine ground state term symbols using Hund's rules of multiplicity; Derive microstates and term symbols for equivalent and non-equivalent electron configurations; Explore the basics of j-j coupling for heavier elements in modern chemical contexts. The course begins with foundational definitions of angular momentum and quantum states before walking you through step-by-step written derivations and practice exercises to solidify your skills. This course is designed for chemistry and physics students looking for a clear, accessible entry point into quantum states, with no prior advanced spectroscopy experience required. Start reading today to master the language of atomic states and spectroscopy.