High School Chemistry Unlocked by Princeton Review

Author:Princeton Review [Review, The Princeton]
Language: eng
Format: epub
Publisher: Random House Children's Books
Published: 2016-11-29T00:00:00+00:00

Oxidation states are artificial constructs—that is to say, they are made up by scientists and not actually inherent properties of an element. However, they are extremely useful in determining the direction of electron transfer in a redox reaction.

The following rules will help you determine the oxidation state on almost any atom.

1. Elements in their standard (uncharged) state will have an oxidation state of zero.

Examples: Cu (s) = 0 N2 (g) = 0

2. Monoatomic (single atom) ions will have an oxidation state equal to their charge.

Examples: Zn2+ = +2 Cl− = −1

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