Curated OER
Unit 2 ~ Atomic Structure
As an atomic structure reference and review tool, this handout fits the bill. The first page provides definitions and tables of orbitals, electrons, and energy levels. The second page is an opportunity to practice determining numbers of...
Georgia State University
Georgia State University: Hyper Physics: Electron Spin
An excellent overview of electron spin, what it means in non-mathematical terms and quantum mechanical terms.
Other
Rochester Institute of Technology: Basics of Nmr
A good overview of NMR. Some of the pictures are slow, but the explanation makes the concepts clear.
Khan Academy
Khan Academy: The Quantum Mechanical Model of the Atom
An explanation using quantum mechanics to describe the atom.
University of Colorado
University of Colorado: Physics 2000: Elements as Atoms: Spin
A basic explanation of spin and how it relates to electrons and quantum numbers.
Simon Fraser University
Chem1 Virtual Textbook: Electron Spin and the Exclusion Principle
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses electron spin with related topics, such as the Pauli exclusion principle, quantum numbers, and more.