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6 January, 01:47

What are the first twenty elements on the periodic table

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Answers (2)
  1. 6 January, 01:48
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    Hydrogen (H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Flourine (F), Neon (Ne), Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorus (P), Sulfur (S), Chlorine (Cl), Argon (Ar), Potassium (K), Calcium (Ca)
  2. 6 January, 02:15
    0
    Chlorine

    Argon

    Potassium

    Calcium
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