Teaching Treasures™

Periodic table | A Larger version

References:

• McGraw-Hill. (1994). Concise Encyclopedia of Science & Technology. Third Edition.

• Drago, R.S. (1977). Principles of Chemistry with Practical Perspectives. Second Edition.

• (IUPAC) The International Union of Pure and Applied Chemistry. http://www.iupac.org

• History of the Periodic Table of the Elements: http://www.ausetute.com.au/pthistor.html

• WebElements^TM, the periodic table on the WWW, URL: http://www.webelements.com/
  Copyright 1993-2005 Mark Winter [ The University of Sheffield and WebElements Ltd, UK] .