H - hydrogen, C - coal/carbon, O - oxygen, Li - lit, Na - sodium, K - potassium, Mg - magnesium, Ca - calcium, Mn - manganese, Fe - iron, Ni - nickel, Cu - copper, Ag - silver, Au - gold, Zn - zinc, Sn - tin, Pb - lead, Al - aluminum, Si - silicon, N - nitrogen, P - phosphorus, S - sulfur, Cl - chlorine, F - fluorine, Br - bromine, He - helium, Ne - neon,

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