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americium

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americium


  2  definitions  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  americium 
  n  :  a  radioactive  transuranic  metallic  element;  discovered  by 
  bombarding  uranium  with  helium  atoms  [syn:  {Am},  {atomic 
  number  95}] 
 
  From  Elements  database  20001107  [elements]: 
 
  americium 
  Symbol:  Am 
  Atomic  number:  95 
  Atomic  weight:  (243) 
  Radioactive  metallic  transuranic  element,  belongs  to  the  actinoids  Ten 
  known  isotopes.  Am-243  is  the  most  stable  isotope,  with  a  half-life  of 
  7.95*10^3  years.  Discovered  by  Glenn  T.  Seaborg  and  associates  in  1945,  it 
  was  obtained  by  bombarding  {uranium}-238  with  alpha  particles. 
 
 




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