Nanografi Nanotechnology

Europium(Eu) is one of the rare earth metals with atomic number 63. In 1886, French chemist Eugene-AntoleDemarcay identified europium by spectroscopic lines in “samarium”. In 1901, europium was successfully isolated by using repeated crystallizations of samarium magnesium nitrate. Afterwards, in 1904 French chemist Georges Urbain also succeeded in purifying europium by separating it from impure gadolinium using bismuth magnesium nitrate. Europium is named after continent Europe.Europium is a moderately hard, ductile and silvery-white metal that readily oxidizes in air and water. Europium has no significant biological role and is relatively non-toxic compared to other heavy metals. Europium is the one of the least abundant element in universe; nearly 5*10 -8 % of all matter in universe is europium. Europium has the second lowest melting point and the lowest density among all lanthanides. Europium is used in the printing of euro banknotes. It glows red under UV light and frogeries...

*Europium is the least abundant of the rare earth elements. It is also the most reactive one. Europium is found in many minerals such as xenotime, monazite, bastnasite, and loparite. It is not found in nature as a free element.Europium was isolated in 1901 and is named after the continent of Europe. *Europium is silvery metal that instantly oxidizes in air. It is the most reactive of the rare earth metals and ignites in air at temperatures in excess of 150 degree to 180 degree. Europium resembles calcium in its reaction with water. Also, Europium metal is the most reactive metal of all rare earth elements. *Europium is about as hard as lead and is quite ductile. *Europium is considered to be mildly toxic. Europium powder is considered to be a fire and explosion hazard. *Europium is used in the printing of euro banknotes. It glows red under UV light, and forgeries can be detected by the lack of this red glow. *Europium powder is used for low-energy light bulbs, thus europium ...