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europium

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europium


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Europium  \Eu*ro"pi*um\,  n.  [NL.;  Europe  +  -ium,  as  in 
  aluminium.]  (Chem.) 
  A  metallic  element  of  the  rare-earth  group  discovered 
  spectroscopically  by  Demarcay  in  1896.  Symbol,  Eu  at  wt., 
  152.0. 
 
  From  WordNet  r  1.6  [wn]: 
 
  europium 
  n  :  a  bivalent  and  trivalent  metallic  element  of  the  rare  earth 
  group  [syn:  {Eu},  {atomic  number  63}] 
 
  From  Elements  database  20001107  [elements]: 
 
  europium 
  Symbol:  Eu 
  Atomic  number:  63 
  Atomic  weight:  151.25 
  Soft  silvery  metallic  element  belonging  to  the  lanthanoids.  Eu-151  and 
  Eu-153  are  the  only  two  stable  isotopes,  both  of  which  are  {neutron} 
  absorbers.  Discovered  in  1889  by  Sir  William  Crookes. 
 
 




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