Which of the oxides is not mixed oxide?
Co(Al2O2)2
Mn3O4
Pb3O4
C3O2
Co(AlO2)2→CoO+Al2O3 Mixed oxide Pb3O4→2PbO+PbO2 Mixed oxide Mn3O4→MnO2+2MnO Mixed oxide C3O2→Carbon suboxide O = C = C = C = O