Make up the reaction equations for the following substances with: a) O2 b) Cl c) S Cu Na Zn Fe K Mg

All reactions are compound reactions and are redox reactions:

a) interaction with oxygen, oxides are formed:
2Cu + O2 = 2CuO;
4Na + O2 = 2Na2O;
2Zn + O2 = 2ZnO;
2Fe + O2 = 2FeO;
4K + O2 = 2K2O;
2Mg + О2 = 2MgО.

b) Interaction with chlorine, chlorides are formed:
Cu + Cl2 = CuCl2;
2Na + Cl2 = 2NaCl;
Zn + Cl2 = ZnCl2;
2Fe + 3Cl2 = 2FeCl3;
2K + Cl2 = 2KCl;
Mg + Cl2 = MgCl2.

c) Interaction with sulfur, sulfides are formed:
Cu + S = CuS;
2Na + S = Na2S;
Zn + S = ZnS;
Fe + S = FeS;
2K + S = K2S;
Mg + S = MgS.