An Introduction to the Electronic Structure of Atoms and Molecules

Dr. Richard F.W. Bader
Professor of Chemistry / McMaster University / Hamilton, Ontario

1.  The Nature of the Problem
2.  The New Physics
3.  The Hydrogen Atom
4. Many-Electron Atoms
  The Atomic Orbital Concept
  The Magnetic Properties of the Electron
  The Electronic Basis of the Periodic Table
  Further Reading
5.  Electronic Basis for the Properties of the Elements
6.  The Chemical Bond
7.  Ionic and Covalent Binding
8.  Molecular Orbitals
Table of Contour Values

 Further Reading

R.M. Hochstrasser, Behaviour of Electrons in Atoms, W. A. Benjamin Inc., New York, N.Y., 1964.

   The magnitude of the total angular momentum in a many-electron atom is governed by the same rules of quantization as apply to the motions of the individual electrons. Because of this, the addition of the angular momentum vectors of the individual electrons in an atom to give the total angular momentum quantum number denoted by J is not arbitrary but must be carried out in such a way that the magnitude of the resultant vector is expressible in the form  with J = 0, 1, 2, 3 ...  An elementary discussion of the manner in which the total angular momentum of an atom is determined by quantum mechanics is given in the above reference.