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Text File  |  1992-07-13  |  496b  |  16 lines
  1.                                      ARGON
  2. Atomic symbol - Ar
  3. Atomic weight - 39.948
  4. Atomic number - 18
  5. Electron configuration - 2-8-8
  6. Oxidation states - 0
  7. State of matter - gas
  8. Noble gas
  9. Discovered in 1894 by Lord Rayleigh and Sir William Ramsay
  10. Boils at -185.7 °C, melts at -189.2 °C
  11.  
  12. Notes:
  13. Obtained from the fractional distillation of liquid air. Argon is used with
  14. nitrogen in filling electric light bulbs. Argon with helium is used as an
  15. inert atmosphere in scientific work.
  16.