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First 20 Elements

  • Game Code: 218862
  •  English    10     Public
    Symbols and uses
  •   Study   Slideshow
  • Sodium
    Na
  •  15
  • Magnesium
    Mg
  •  15
  • Chlorine
    Cl
  •  15
  • Argon
    Ar
  •  15
  • Potassium
    K
  •  15
  • Silicon
    Si
  •  15
  • Aluminium
    Al
  •  15
  • Calcium
    Ca
  •  15
  • Sulphur
    S
  •  15
  • Phosphorus
    P
  •  15
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