Oxidation numbers (Redox-01)

Determine the oxidation numbers of all atoms involved

1. H₂
2. F₂
3. Na⁺
4. S^2-
5. H₂O
6. Fe₃O₄
7. CH₄
8. CH₃F
9. CHF₃
10. CH₄O
11. N₂O₄
12. NO
13. HNO₃
14. H₃O⁺
15. NH+4

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