Other
Us: Valence Shell Electron Pair Repulsion (Vsepr)
An excellent tutorial that examines VSEPR and pairs of valence electrons. The valence shell electron pair repulsion concept is explored using animated models. Includes a VSEPR calculator. Use the toolbar on the left to navigate through...
Concord Consortium
Concord Consortium: Molecular Workbench: Atomic Orbitals
View the approximate locations of electrons in valence shells 1s through 4f.
Clackamas Community College
Clackamas Community College:valence Electrons
Introduction to the concept of valence electrons that relates the idea to periodic properties and electron configurations.
Science Struck
Science Struck: Electron Configuration Chart for the Periodic Table
Explains the theoretical basis of electron configuration and presents a table of all 118 elements with their symbols, number of electrons, and electron configurations.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Abbreviated Electron Configurations
Test your electron-configuration skills in this animated exercise. Practice writing the abbreviated configurations for some of the common elements on the periodic table.
University of Colorado
University of Colorado: Physics 2000: Origin of the Periodic Table: Valence Electrons
Valence electrons are defined in terms of electron configuration.