First 20 elements of the periodic table 0.0 / 5 ? SciencePeriodic tableAll LevelsNone Created by: Himani.11Created on: 01-02-18 16:48 Hydrogen Helium 1 of 10 Lithium Beryllium 2 of 10 Boron Carbon 3 of 10 Nitrogen Oxygen 4 of 10 Fluorine Neon 5 of 10 Sodium Magnesium 6 of 10 Aluminium Silicon 7 of 10 Phosphorus Sulfur 8 of 10 Chlorine Argon 9 of 10 Potassium Calcium 10 of 10
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