Question

даю 100 балов срочно

Answer 1

3)

H2S - H(I), S(II);

SO2 - S(IV), O(II);

SO3 - S(VI), O(II);

CO - C(II), O(II);

CO2 - C(IV), O(II).

4)

HCl - H(I), Cl(I);

Cl2O5 - Cl(V), O(II);

Cl2O7 - Cl(VII), O(II);

Hg2O - Hg(I), O(II);

HgO - Hg(II), O(II).