Corretto: O, H, N, Cl, I, Br, F, S, P, Al, Fe, Na, Ga, Pb, Ne, Errato: H2O, CO2, CO, CH4, NH3, SO2, SO3, C6H12O6, NaCl, KCl, C12H22O11, PbO2, O3, H2, N2,

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