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Determine the oxidation number for each of the atoms in the following species.
1. F2
2. Ca1Cl2
3. C1O2
4. OH1-
5. SO32-
6. Na3N1
7. Al2(SO4)3
8. SO3
9. Ba1(C2H3O2)2 (Hydrogen oxidation number is -1)
10. (NH4)2(CO3)1