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Text File  |  1992-07-13  |  666b  |  18 lines
  1.                                     OXYGEN
  2. Atomic symbol - O
  3. Atomic weight - 15.9994
  4. Atomic number - 8
  5. Electron configuration - 2-6
  6. Oxidation states - -2
  7. State of matter - gas
  8. Non-metal
  9. Discovered in 1774 by Joseph Priestly
  10. Boils at -183 °C, melts at -218.4 °C
  11.  
  12. Notes:
  13. Oxygen is commercially prepared by the fractional distillation of liquid air.
  14. At high temperatures oxygen combines with most elements and many compounds,
  15. esspecially those containing carbon and hydrogen, to form oxides of all
  16. elements. Oxygen is necessary to sustain human life. A substance combining
  17. with oxygen is always oxidized, and all such combinations produce heat energy.
  18.