Oxidation numbers
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10 terms
Terms | Definitions |
|---|---|
 each atom in a pure element | 0 |
| monoatomic ion | oxidation number is equal to its ion charge |
| halogens in compounds | -1 |
| halogens exception | when halogens are combined with oxygen or fluorine, the oxidation number of Cl, Br, and I is NOT -1 |
| oxygen in compounds | -2 |
| oxygen in compounds exception | in compounds containing the peroxide ion (0_2_^2-) oxygen has an oxidation number of -1 |
| hydrogen with nonmetals | +1 |
| hydrogen with metals | -1 |
| sum of oxidation numbers in ions | the some of the oxidation numbers for all atoms in a ion is equal to the overall charge of the ion |
| sum of oxidation numbers in neutral compounds | the sum of the oxidation numbers for all atoms in a neutral compound is 0 |
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