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Elements, Symbols and Atomic numbers

         ( Atoms, Symbols and Atomic numbers )
 Name.              Symbol .         Atomic  numbers

  1. Hydrogen                 H.                       1
  2. Helium.                    He .                    2
  3. Lithium.                    Li.                      3
  4. Beryllium.                 Be .                    4
  5. Boron.                        B.                      5
  6. Carbon .                    C .                      6
  7. Nitrogen .                  N .                     7
  8. Oxygen .                    O .                      8
  9. Flourine.                    F .                      9
  10. Neon .                        Ne .                   10
  11. Sodium .                   Na.                     11
  12. Magnesium.              Mg .                 12
  13. Aluminium .               Al .                   13
  14. Silicon .                       Si.                    14
  15. Phosphorus .             P.                      15
  16. Sulphur .                     S .                     16
  17. Chlorine.                    Cl.                      17
  18. Argon .                         Ar .                   18
  19. Potassium.                 K .                     19                                         
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