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→About Redox Reactions
: [[Oxidation]] of [[Aluminium]]: <chem>Al - 3e^- -> Al^3+</chem>
: [[Reduction]] of [[Iron]]: <chem>Fe^3+ + 3e^- -> Fe</chem>
To remember whether [[electron]]s are gained or lost the [[acronym]] '''OIL RIG''' can be used: [[Oxidation]] is lost, [[Reduction]] is gained.