Oxidation Number Rules

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10 Terms

1
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Uncombined state of element- including diatomic

zero

2
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monoatomic ion

same as charge

3
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sum of oxidation numbers in neutral compound

0

4
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sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to

charge on ion

5
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 oxidation number of an alkali metal (IA family) in a compound

+1

6
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oxidation number of an alkaline earth metal (IIA family) in a compound

+2

7
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oxidation number of oxygen in a compound

-2

8
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oxidation number of hydrogen in a compound with nonmetals

+1

9
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oxidation number of hydrogen in a compound with metals

-1

10
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oxidation number of fluorine is always

-1