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Unformatted text preview: equations one must know the oxidation number of the element. The oxidation number of an element is a number which, applied to that element in a particular compound, indicates the amount of oxidation or reduction which is required to convert one atom of the free state to that of the compound. The following rules apply to the determination of oxidation numbers. 1. The oxidation number of the free or uncombined element is 0. 2. The oxidation number of the hydrogen ion has a value of +1. 3. The oxidation number of oxide oxygen is -2. 4. The oxidation number of a metal in a compound is usually positive. 5. The oxidation number of a radical or ion is equal to the electrical charge. 6. The oxidation number of a compound is always zero and is determined by the sum of the individual atoms each multiplied by the number of atoms of the element in the molecule....
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- Spring '08