Group 1, Hydrogen, Lithium, Sodium, Potassium, Group 2, Beryllium, Magnesium, Calcium, Group 13, Boron, Aluminum, Group 14, Carbon, Silicon, Group 15, Nitrogen, Phosphorus, Group 16, Oxygen, Sulfur, Group 17, Fluorine, Chlorine, Group 18, Helium, Neon, Argon

First 20 Elements Group Sort

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