Electrons #5: Electrons in Atoms and Periodicity

Electron Configurations use quantum numbers (probability descriptions of where an electron is located outside of its nucleus) to differentiate among and list out all of the electrons in an atom.

• Watch this short video and then go to each of the website links that follow.  Pay extra attention to the discussion of Coulomb's Law and shielding.

• Answer the questions on each of the links.

http://www.sciencegeek.net/Chemistry/taters/Unit2ElectronNotations.htm

http://www.sciencegeek.net/Chemistry/taters/Unit3ValenceElectrons.htm