А), Б), В), Г).
SO2 - S(IV), O(II);
Fe2O3 - Fe(III), O(II);
Cl2O7 - Cl(VII), O(II);
H2S - H(I), S(II).
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А), Б), В), Г).
SO2 - S(IV), O(II);
Fe2O3 - Fe(III), O(II);
Cl2O7 - Cl(VII), O(II);
H2S - H(I), S(II).