External Resourses

Chem1 Virtual Textbook - Periodic Properties
Well written and illustrated introduction to the periodic properties.

HyperPhysics - Ionization Energy and Electron Affinity

Purdue University - Size of Atoms
Excellent, comprehensive discussion of atomic radius. A bit more detailed than the typical MCAT preparation, so treat some sections as reading comprehension.

Purdue University - Ionization Energy and Electron Affinity
Comprehensive well-designed tutorial.

PY106 Notes - Electric energy and potential
Well-expressed and illustrated introduction to these crucial concepts. Includes an illustration of the concept of electric potential energy in the context of the ionization energy of an atom.