Lamar High School, Arlington, Texas, U.S.A.
Barium: Barium sulphate is a contrast medium for upper and lower gastro intestines, so an intestinal X-ray is the background. The lettering is in green because barium burns green in a flame test. The equation at the bottom represents how barium was used to discover a fission reaction of uranium by Meitner and Frisch.
Artwork by Melissa McNeill. Teacher: Meg Young, Lamar High School, Arlington, Texas, U.S.A.
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/