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Unformatted text preview: 1. Is the atom in an element in its standard state. If so, the oxidation state is zero. E.g. H 2 , Ar. .. 1. Is the atom an atomic ion? If so, the oxidation state is simply usually equal to its charge. (Na is +1, Cl is -1, Fe is +3) 1. Is the atom part of a binary ionic compound? a. Binary ionic compounds are made up of atomic ions. 1. Is the atom in a molecule or polyatomic ion? The atoms of many elements have typical oxidation states when they're part of molecules: a. 1. Try to use the fact that atoms of certain main group elements strongly prefer one particular oxidation state when they are part of a molecule...
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