Oxidation Numbers (O.N.)

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Last updated 2:38 PM on 10/16/26
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8 Terms

1
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  1. O.N.


0 for atoms in pure elements, including diatoms

2
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  1. O.N.


the charge of single atom ions

3
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  1. O.N.


-1 for fluorine atoms in all compounds except F2

4
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  1. O.N.


+1/+2 for group 1/2 metals, respectively, in all compounds

5
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  1. O.N.


+1 for hydrogen atoms in nearly all compounds except metal hydrides

6
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  1. O.N.


2 for oxygen atoms in nearly all compounds, except for

compounds with fluorine (OF2)

7
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  1. O.N.


-1 for non-fluorine group 17 compounds, usually. Exceptions apply when higher rules must be obeyed, such as perbromate.

8
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  1. O.N.


values MUST sum to charge of compound or overall ion