University of Waterloo, Waterloo, Ontario, Canada
Fluorine: This mosaic was pieced together from photographs taken of fluorite samples kindly provided by Dr. Peter Russell (Department of Earth and Environmental Sciences, University of Waterloo) to give the impression of fluoride-etched glass. Two tesserae were added to represent the impact that fluorine has on our society. One is of a drug molecule that contains a key fluorine atom. The second is a graphic of fluorocarbons, molecules that play important roles in industry. The final addition was the fiery letter F, representing the extreme chemical reactivity of elemental fluorine. In 1886, Henri Moissan reported the successful isolation of elemental fluorine (F2).
John Honek, University of Waterloo, Waterloo, Ontario, Canada
Number of isotopes:
* Haynes, W. M. (2011). CRC Handbook of Chemistry and Physics, 91st edition: http://www.hbcponline.com/ Retrieved April 7, 2011
± Winter, M. (2010). Home of the Periodic Table. Retrieved April 8, 2011, from Web Elements: http://www.webelements.com/