Praseodymium - Pr
Praseodymium has no biological role and is not present in humans, but is low in toxicity.
People Leading to Praseodymium's Discovery
Announced didymium as an element after separating it from cerium in 1841 leading some chemists to speculate if didymium, too, was a compound.
Confirmed that didymium's atomic structure was not that of a pure metal in 1882.
Carl Auer von Welsbach
Successfully separated didymium into praseodymium and neodymium in Austria in 1885.
Praseodymium got its name form the Greek words "prasios didymos" meaning green twin because it develops a green coating when exposed to air and was discovered at the same time as neodymium.
Praseodymium is found in monazite and bastnaesite. These materials are mosty located in China.
- Element Card: Gray, Theodore W. (2008). The Photographic Card Deck of the Elements.
- Elements Book: Gray, Theodore W. (2009). The Elements: A visual exploration of every known atom in the universe. New York: Black Dog & Leventhal Publishers, Inc.
- “Praseodymium.” Los Alamos National Library, N.p., n.d. Web. 21 Dec. 2015. http://periodic.lanl.gov/59.shtml.
- “Praseodymium.” Royal Science of Chemistry, N.p., n.d. Web. 21 Dec. 2015. http://www.rsc.org/periodic-table/element/59/praseodymium.
- "Didymium Glasses for Glass Blowing." teralabUK. YouTube. 29 Sept. 2009.