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poloniummore about polonium

polonium


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Polonium  \Po*lo"ni*um\,  n.  [NL.  So  named  after  Poland,  in  L. 
  form  Polonia,  one  of  the  discoverers  being  a  Pole.]  (Chem.) 
  A  supposed  new  element,  a  radioactive  substance  discovered  by 
  M.  and  MMe.  Curie  in  pitchblende.  It  is  closely  related 
  chemically  to  bismuth.  It  emits  only  alpha  rays  and  is 
  perhaps  identical  with  radium  F. 
 
  From  WordNet  r  1.6  [wn]: 
 
  polonium 
  n  :  a  radioactive  metallic  element  that  is  similar  to  tellurium 
  and  bismuth;  occurs  in  uranium  ores  but  can  be  produced 
  by  bombarding  bismuth  with  neutrons  in  a  nuclear  reactor 
  [syn:  {Po},  {atomic  number  84}] 
 
  From  Elements  database  20001107  [elements]: 
 
  polonium 
  Symbol:  Po 
  Atomic  number:  84 
  Atomic  weight:  (210) 
  Rare  radioactive  metallic  element,  belongs  to  group  16  of  the  periodic 
  table.  Over  30  known  isotopes  exist,  the  most  of  all  elements.  Po-209  has 
  a  half-life  of  103  years.  Possible  uses  in  heating  spacecraft.  Discovered 
  by  Marie  Curie  in  1898  in  a  sample  of  pitchblende. 
 
 




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