Shodor Education Foundation
Shodor: Background Reading for Ionization Energy
A very complete lesson on ionization energy, including tables and charts to illustrate the ideas presented in the text.
Ohio State University
Ohio State University: Electron Affinity
This page describes electron affinity and the periodic trends of the elements according to their positions on the periodic table.
Quia
Quia: Common Type Ii Cations
This page links to a number of Java games that are designed to make learning the names, symbols and charges of the various cations fun.
Quia
Quia: Common Monotomic Cations and Anions
This page links to a number of fun Java games, designed to help students learn the names and symbols of various ions. Games include matching, concentration and word search.