Hydrogen , H, Helium, He, Lithium, Li, Baraluim, Be, Boron , B, Carbon, C, Nitrogen, N, Oxygen, O, Florine, F, neon, Ne, Sodium, Na, Magnesium, Mg, Alluminium, Al, Silicon, Si, Phosphorus, P, Sulfur, S, Chlorine, Cl, Argon, Ar, Potassium, K, Calcuim, Ca.

Science , periodic table.

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