CREDITS FOR THIS PAGE'S INFORMATION
1. Infopedia v. 2.0, Produced by Softkey inc. Copyright 1992-1995
2. http://www.cchem.berkeley.edu/Table/index.html WebElements
3. http://jchemed.chem.wisc.edu/ The ChemiCool Periodic Table
4. Encarta 96 Produced by: MICROSOFT Copyright 1995