Radon
By Jesslynn Krempp
General Information
Medical Uses
Industrial Uses
Enviromental Impact
Sources
http://www.chacha.com/question/how-is-the-element-radon purified#sthash.J8yUsoJc.dpuf
http://en.wikipedia.org/wiki/Radon
http://enhs.umn.edu/hazards/hazardssite/radon/radonintro.html
Radon