Name___________________

Date___________ Pd._____

Oxidation Numbers Chemistry

Unit 10: Redox

Determine the oxidation states for each atom (or polyatomic ion) present in the given formulas.

1. Cl2

Cl = ____

2. Cl-

Cl = ____

3. NaNa = ____

4. Na+

Na = ____

5. KClK = ____Cl = ____

6. H2SH = ____S = ____

7. CaOCa = ____O = ____

8. H2SO4

H = ____SO4 = ____

9. NH4ClNH4 = ____Cl = ____

10. NO2

N = ____O = ____

11. NH3

N = ____H = ____

12. Na2O2

Na = ____O = ____