S = +4 oxidation state O = -2 oxidation state
K = +1 oxidation state Cl = +3 oxidation state O = -2 oxidation state
Oxidation number of Se is +6. Oxidation number of O is -2.
The oxidation number is + for C and -2 for O.
KO2 is rare and is called potassium superoxide. It consists of K+ ion and O^2- ion. In this case, the oxidation number of O would be 1-. If, however, you meant to ask about K2O (potassium oxide), then the oxidation number of O would be 2-
O. S. of K = +1
Ru has oxidation number +8, O has oxidation number of -2
The overall oxidation number is -2 so the average oxidation number of O is -1.
Co = +2 oxidation C = +4 oxidation O = -2 oxidation
Oxidation number of chlorine is +7. oxidation number of O is -2.
S = +4 oxidation state O = -2 oxidation state
The oxidation number for H is +1, and the oxidation number for O is -1.
Oxidation number of Si is +4.Oxidation number of O is -2.
The oxidation number of O in any elemental form (e.g. O2, O3) is zero. Typically in chemical compounds the oxidation number of O is -2 (oxide ion)
Oxidation state of O is -2.Oxidation state of S is +4.
Oxidation number of Nb is +4. Oxidation number of O is -2.
Oxidation number of C is +3. Oxidation number of O is -2.