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argon

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argon


  4  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Argon  \Ar"gon\,  n.  [NL.,  fr  Gr  ?,  neut.  of  ?  inactive;  ?  priv. 
  +  ?  work.]  (Chem.) 
  A  colorless,  odorless  gas  occurring  in  the  air  (of  which  it 
  constitutes  0.93  per  cent  by  volume),  in  volcanic  gases, 
  etc.;  --  so  named  on  account  of  its  inertness  by  Rayleigh  and 
  Ramsay,  who  prepared  and  examined  it  in  1894-95.  Symbol,  A; 
  at  wt.,  39.9.  Argon  is  condensible  to  a  colorless  liquid 
  boiling  at  -186.1[deg]  C.  and  to  a  solid  melting  at 
  -189.6[deg]  C.  It  has  a  characteristic  spectrum.  No  compounds 
  of  it  are  known  but  there  is  physical  evidence  that  its 
  molecule  is  monatomic.  Weight  of  one  liter  at  0[deg]  C.  and 
  760  mm.,  1.7828  g. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Argon  \Ar"gon\,  n.  [Gr.  ?  inactive.]  (Chem.) 
  A  substance  regarded  as  an  element,  contained  in  the 
  atmosphere  and  remarkable  for  its  chemical  inertness. 
  --Rayleigh  and  Ramsay. 
 
  From  WordNet  r  1.6  [wn]: 
 
  argon 
  n  :  a  colorless  and  odorless  inert  gas;  one  of  the  six  inert 
  gases;  comprises  approximately  1%  of  the  earth's 
  atmosphere  [syn:  {Ar},  {atomic  number  18}] 
 
  From  Elements  database  20001107  [elements]: 
 
  argon 
  Symbol:  Ar 
  Atomic  number:  18 
  Atomic  weight:  39.948 
  Monatomic  noble  gas.  Makes  up  0.93%  of  the  air.  Colourless,  odorless.  Is 
  inert  and  has  no  true  compounds.  Lord  Rayleigh  and  Sir  william  Ramsey 
  identified  argon  in  1894. 
 
 




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