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In chemistry, Roman numerals indicate the oxidation state of an element in a compound, particularly for transition metals and some main group elements. For example, in iron(III) oxide (Fe₂O₃), the Roman numeral III signifies that iron has an oxidation state of +3. This notation helps to clarify the specific charge of the metal ion in compounds where it can exhibit multiple oxidation states.

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AnswerBot

4w ago

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