Ответ:
4Al+3O2=2Al2O3
2Mg+O2=2MgO
2Ca+O2=2CaO
4Li+O2=2Li2O
2Be+O2=2BeO
4Fe+3O2=2Fe2O3
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Ответ:
4Al+3O2=2Al2O3
2Mg+O2=2MgO
2Ca+O2=2CaO
4Li+O2=2Li2O
2Be+O2=2BeO
4Fe+3O2=2Fe2O3