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Topic: Europium


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  Europium Summary
Europium is the most reactive of the rare earth elements; it quickly oxidizes in air, and resembles calcium in its reaction with water.
Europium oxide (Eu) is widely used as a red phosphor in television sets, and as an activator for yttrium-based phosphors.
Europium is never found in nature as the free element; however, there are many minerals containing europium, with the most important sources being bastnasite and monazite.
www.bookrags.com /Europium   (1935 words)

  
 It's Elemental - The Element Europium
Europium is the most reactive of the rare earth elements.
Since it is a good absorber of neutrons, europium is being studied for use in nuclear reactors.
Europium oxide (Eu), one of europium's compounds, is widely used as a red phosphor in television sets and as an activator for yttrium-based phosphors.
education.jlab.org /itselemental/ele063.html   (135 words)

  
 Europium (Eu) - Chemical properties, Health and Environmental effects
Europium is a soft silvery metal, both are and expensive.
Europium phosphors are used in television tubes to give a bright red colour and as an activator for yttrium-based phosphors.
A salt of europium is used for newer phosphorescent powder and paints.
www.lenntech.com /Periodic-chart-elements/Eu-en.htm   (244 words)

  
 europium — FactMonster.com
Europium is a ductile silvery-white metal; it is both rare and expensive.
Europium oxide, a pinkish powder, is used to activate red phosphors in the manufacture of color television picture tubes.
Periodic Table of the Elements: Europium - Periodic Table of the Elements: Europium 63 Eu Europium 151.96 2 · 8 · 18 25 ·...
www.factmonster.com /ce6/sci/A0817907.html   (244 words)

  
 Periodic Table : Scholar edition: europium : The Essentials
WebElements periodic table : Scholar edition : europium : The Essentials
To learn more about the physical properties of europium, select "Physical data" from the menu to the left.
Europium ignites in air at about 150 to 180°C. Europium is about as hard as lead and is quite ductile.
www.webelements.com /webelements/scholar/elements/europium/key.html   (152 words)

  
  Europium - Products - HEFA Rare Earth Canada Ltd.
Europium, atomic no. 63, symbol Eu, weight at 151.96, is utilized primarily for its unique luminescent behavior.
Excitation of the Europium atom by absorption of ultra violet radiation can result in specific energy level transitions within the atom creating an emission of visible radiation.
Phosphor Grade Europium Oxide is a kind of white powder with a slight pinkish shade.
www.baotou-rareearth.com /eu.html   (218 words)

  
  Europium
Europium is now prepared by mixing Eu2O3 with a 10%-excess of lanthanum metal and heating the mixture in a tantalum crucible under high vacuum.
Europium isotopes are good neutron absorbers and are being studied for use in nuclear control applications.
Europium oxide is now widely used as a phospor activator and europium-activated yttrium vanadate is in commercial use as the red phosphor in color TV tubes.
www.corrosionsource.com /handbook/periodic/63.htm   (265 words)

  
  Principal Metals-Europium
Europium is now prepared by mixing Eu2O3 with a 10%-excess of lanthanum metal and heating the mixture in a tantalum crucible under high vacuum.
Europium isotopes are good neutron absorbers and are being studied for use in nuclear control applications.
Europium oxide is now widely used as a phospor activator and europium-activated yttrium vanadate is in commercial use as the red phosphor in color TV tubes.
www.principalmetals.com /utilities/63.htm   (254 words)

  
 Europium (Eu) - Europium Properties and Applications
The discovery of europium is credited to Demarcay in 1901 who separated it in fairly pure form from earth.
Europium ignites in air from temperatures starting at about 150 to 180°C. It has a similar hardness to lead and exhibits good ductility.
Europium is one of the rarest and most expensive rare-earth metals.
www.azom.com /details.asp?ArticleID=1128   (236 words)

  
 CRCPress Periodic Table Online: Cadmium
Europium is now prepared by mixing Eu with a 10%-excess of lanthanum metal and heating the mixture in a tantalum crucible under high vacuum.
As with other rare earth metals, except for lanthanum, europium ignites in air at about 150 to 180°C. Europium is about as hard as lead and is quite ductile.
Europium oxide is now widely used as a phosphor activator and europium-activated yttrium vanadate is in commercial use as the red phosphor in color TV tubes.
www.chemnetbase.com /periodic_table/elements/europium.htm   (271 words)

  
 europium - Information from Reference.com
Europium is not abundant in the Earth's surface.
Europium metal is quite expensive to make and sells for about $3,000 to $4,500 a kilogram ($1,350 to $2,000 a pound).
Europium oxide is a compound made of europium metal and oxygen.
www.reference.com /browse/all/europium   (1074 words)

  
 Europium (Eu)   (Site not responding. Last check: )
Europium was discovered in 1896 by Eugene Demarcay (a French chemist).
Because europium can readily absorb neutrons, it is used in the control of nuclear fission in reactors.
Europium oxide is used as a phospor activator and europium-doped plastic has been used as a laser material.
www.bayerus.com /msms/fun/pages/periodic/europium/index.html   (81 words)

  
 Europium (Element)   (Site not responding. Last check: )
Europium is the most reactive of the rare-earth elements.
Europium is about as hard as lead and oxidizes very rapidly in air.
Europium oxide is most commonly used in color television sets as the red phosphor contain in TV tubes.
www.tamuk.edu /chemistry/WebElements/europium_element.htm   (75 words)

  
 Europium - Uncyclopedia, the content-free encyclopedia   (Site not responding. Last check: )
Europium, discovered in the aftermath of a misguided post-World War 2 experiment on Francium-Germanium collisions as neutrally observed from stinky place, Switzerstink is a notoriously smelly element.
No one knows what Europium is good for, but it is also used by sinister liberal media in television to give the red liberal European bias.
Intellectual proprietary rights to europium are controlled by the international council of very smelly things; this may account for Europium's unusually-smelly smell.
uncyclopedia.org /wiki/Europium   (158 words)

  
 Europium
Europium is now prepared by mixing Eu203 with a 10% excess of lanthanum metal and heating the mixture in a tantalum crucible under high vacuum.
Europium oxide is now widely nse4 as a phosphoractivator, and europium activated yttrium vanadate is in commercial use as the red phosphor in color TV tubes.
Europium is one of the rarest and most costly of the rareearth metals.
pte.8k.com /EL063.html   (282 words)

  
 American Elements: Europium Supplier & Technical Information
Europium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.
As to Europium’s electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ºC is 90 µOcm and its electronegativities (or its ability to draw electrons relative to other elements) is non-detectable.
Sorption of cesium, cobalt and europium on low-rank coal and chitosan.
www.americanelements.com /eu.html   (740 words)

  
 Argonne Chemistry Research Areas
Our work has shown that europium can play a dual role by acting both as a photocatalyst for complexant destruction and, using laser-induced fluorescence, a basis for assessing the degree of such destruction achieved by photolysis.
Europium is a heavy element ion often present in nuclear waste because it is a fission product.
In summary, in the case of THFTCA, we have shown that photocatalytic destruction of organic complexants in aqueous solution is readily achieved using europium ions and near-ultraviolet photolysis.
chemistry.anl.gov /heavy-element/photophysics/lif-europium.html   (637 words)

  
 Europium Complexes Having an Aminophenanthroline Ligand as Red Dopants in Electroluminescent Devices
In the fabrication of electroluminescent device using europium complexes as dopants, the choice of host materials and hole blocker is very limited because of the very low-lying HOMO levels for most europium complexes.
To understand the efficiency of the europium complexes as red emitters in electroluminescent devices, several devices were fabricated.
  For europium complexes with their HOMO levels appearing at ~ 6 eV, the hole and electron trapping by these complexes are less favorable when these complexes are doped in the CBP layer due to the fact that the HOMO of CBP is higher than those of the europium complexes.
www.azom.com /Details.asp?ArticleID=3073   (3047 words)

  
 Eu - Europium
The discovery of europiumis generally credited to Demarcay, who separated the rare earth in reasonably pure form in1901.
Europium has been identified spectroscopically in the sun and certain stars.
Europium isotopes are good neutron absorbers and are beingstudied for use in nuclear control applications.
www.physlink.com /Reference/ChemicalElements/europium.cfm   (83 words)

  
 Europium - Memory Alpha, the Star Trek Wiki   (Site not responding. Last check: )
Europium is a rare earth element, number 63 on the periodic table.
However in brown dwarf stars, the element europium is anomalously depleted.
Europium was named for the continent of Europe.
memory-alpha.org /en/index.php?title=Europium&redirect=no   (75 words)

  
 63 Europium
Europium is a tricky metal to present in a periodic table collection.
In the new long-life low-energy compact fluorescents, europium is responsible for the pleasant warmer color of the light.
A mixture of europium compounds are coated onto the interior surface of the lamp and stimulated to glow by discharge through the low pressure gas in the tube.
www.theodoregray.com /PeriodicTableDisplay/Elements/063/index.s7.html   (293 words)

   1" rowspan="1"> 63 1" rowspan="1"> Eu 1" rowspan="1"> Europium 1" rowspan="1"> 151.96 1" rowspan="1"> 2 ·â€‰8 ·â€‰18 25 ·â€‰8 ·â€‰2 ...
 Highbeam Encyclopedia - Search Results for europium
Periodic Table of the Elements: Europium
The metal is used in the manufacture of colour television screens, lasers, and in control rods in nuclear reactors.
Europium oxide is used with yttrium oxide as a red phosphor in color television screens.
www.encyclopedia.com /SearchResults.aspx?Q=europium   (571 words)

  
 Europium   (Site not responding. Last check: )
Europium is named for Europe and was discovered in 1890.
Europium is found along with the other rare-earth minerals principally in monazite and bastnasite.
Europium oxide is widely used as a phosphor activator and europium activated yttrium vanadate is in commercial use as the red phosphor in color tv tubes.
www.muhlenberg.edu /depts/chemistry/pertable/euroinfo.htm   (61 words)

  
 Chemistry : Periodic Table : europium : key information
It is used in television screens to produce a red colour.
Here is a brief summary of the isolation of europium.
Europium metal is available commercially so it is not normally necessary to make it in the laboratory, which is just as well as it is difficult to isolate as the pure metal.
www.webelements.com /webelements/elements/text/Eu/key.html   (364 words)

  
 Europium summary statistics
The histogram of europium abundances in all West Virginia coal beds shows a near-normal, slightly skewed distribution with a mean of 0.33 ppm (± 0.17 ppm) on a whole coal basis.
Europium correlated slightly with ash yield and scandium (Sc), thorium (Th), chromium (Cr), vanadium (V), lead (Pb) and lithium (Li) related to ash forming minerals.
Europium is one of the rare earth elements and correlated mainly with the other rare earth elements samarium (Sm), cerium (Ce), ytterbium (Yb), terbium (Tb), lutetium (Lu), lanthanum (La), neodymium (Nd), erbium (Er) and dysprosium (Dy).
www.wvgs.wvnet.edu /www/datastat/te/Euhist.htm   (180 words)

  
 Europium   (Site not responding. Last check: )
Europium, Eu, is a silvery metallic element, which is found in the lanthanide series of inner transition metals in Group IIIa of the periodic table.
Europium is separated from other rare earths by ion exchange chromatography.
Europium is a silvery-white soft metal, with the hardness of lead.
www.ucc.ie /academic/chem/dolchem/html/elem/elem063.html   (98 words)

  
 Amazon.com: Europium: Books   (Site not responding. Last check: )
Europium (Anorganische und allgemeine Chemie in Einzeldarstellungen) by Shyama P Sinha (Unknown Binding - 1967)
Optical fiber spectroscopy a study of the luminescent properties of the Europium ion for thermal sensors : annual report for NASA grant NAG 11-1443...
Temperature classification of the spectra of europium, gadolinium, terbium, dysprosium, and holmium,: [lambda]-3850 to [lambda]-4700, (Contributions from the Mount Wilson Observatory) by Arthur Scott King (Unknown Binding - 1930)
www.amazon.com /s?ie=UTF8&keywords=Europium&index=books&page=1   (700 words)

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