Lecture Notes: Introduction to Atomic Structure
Lecture Notes: Bohr Model of the Hydrogen Atom
Lecture Notes: Introduction to the Quantum mechanical Model of the Hydrogen Atom
Lecture Notes: Multi-electron atoms, electron configuration and orbital diagrams
Lecture Notes from AP Chemistry Institute
Lecture Notes: Atomic radii, ionization energies, electron affinity and ionic radii (updated on November 27, 2000)