Pictures
http://en.wikipedia.org/wiki/William_Ramsay
http://en.wikipedia.org/wiki/Marie_Curie
http://en.wikipedia.org/wiki/Friedrich_Ernst_Dorn
http://en.wikipedia.org/wiki/Pierre_Curie
http://commons.wikimedia.org/wiki/File:Radon.svg
http://oxford-labs.com/x-ray-fluorescence/the-periodic-table/
http://www.webelements.com/radon/physics.html
http://www.atsdr.cdc.gov/csem/csem.asp?csem=8&po=5
http://www.rsc.org/periodic-table/element/86/radon
http://www.chemicool.com/elements/radon.html
Websites
"Radon." Wikipedia. Wikimedia Foundation, 12 May 2014. Web. 09 Dec. 2014.
"Rcs Radon." Search Results. N.p., n.d. Web. 09 Dec. 2014.
"Radon.com." Radon Facts. N.p., n.d. Web. 08 Dec. 2014.
"Chemistry Explained." Radon, Chemical Element. N.p., n.d. Web. 10 Dec. 2014.
"Radon." EPA. Environmental Protection Agency, n.d. Web. 15 Dec. 2014.
http://en.wikipedia.org/wiki/William_Ramsay
http://en.wikipedia.org/wiki/Marie_Curie
http://en.wikipedia.org/wiki/Friedrich_Ernst_Dorn
http://en.wikipedia.org/wiki/Pierre_Curie
http://commons.wikimedia.org/wiki/File:Radon.svg
http://oxford-labs.com/x-ray-fluorescence/the-periodic-table/
http://www.webelements.com/radon/physics.html
http://www.atsdr.cdc.gov/csem/csem.asp?csem=8&po=5
http://www.rsc.org/periodic-table/element/86/radon
http://www.chemicool.com/elements/radon.html
Websites
"Radon." Wikipedia. Wikimedia Foundation, 12 May 2014. Web. 09 Dec. 2014.
"Rcs Radon." Search Results. N.p., n.d. Web. 09 Dec. 2014.
"Radon.com." Radon Facts. N.p., n.d. Web. 08 Dec. 2014.
"Chemistry Explained." Radon, Chemical Element. N.p., n.d. Web. 10 Dec. 2014.
"Radon." EPA. Environmental Protection Agency, n.d. Web. 15 Dec. 2014.