Lutetium

By: Marko
 * [[image:Lutetium.jpg align="right"]]Element Name - Lutetium**


 * Atomic Number: 71**


 * Protons: 71**


 * Electrons: 71**


 * Neutrons: 103.967**


 * Average Atomic Mass: 174.967**


 * Isotopes: 2LuF3 + 3Ca --> 2Lu + 3CaF2**


 * Discovery: It was discovered in 1907-1908 by Carl Auer von Welsbach and Georges Urbain. Carl found a odd black rock outside the town of Ytterby, Sweden. He studied it with Johan Gadolin. They found that Ytterbium was not a element, it was a mixture of two new elements. They called those elements neoytterbium and lutecium. In 1949, the spelling of the element changed from "lutecium" to "lutetium."**
 * Name: Urbain derived the name for the element from Lutetia, which was the ancient Roman name for Paris. The name Urbain game it to honour Paris, his native city, became widely accepted, except in Germany, where it was commonly called cassiopeium untill the 1950s.**


 * Uses: There are no current uses for bohrium outside of basic scientific research.**


 * Interesting Facts: The metal is silvery white and relatively stable in air. It is a rare earth metal and perhaps the most expensive of all rare elements. It is found in small amounts with all rare earth metals, and is very difficult to separate from other rare elements. Pure lutetium is available through the reduction of LuF3 with calcium metal.**

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 * Video:**
 * Sources**
 * Photo: http://upload.wikimedia.org/wikipedia/commons/4/40/Electron_shell_071_lutetium.png
 * http://nobel.scas.bcit.ca/resource/ptable/ptblegif/lu.gif
 * Video: http://www.youtube.com/watch?v=a5T1xXoR8XI&feature=player_embedded
 * Information: http://www.webelements.com/lutetium/
 * http://www.britannica.com/EBchecked/topic/351924/lutetium
 * http://www.wisegeek.com/what-is-lutetium.htm