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Electrons are ( rarely, oxidized, reduced, reduction, oxidation ) found unattached to atoms. Thus, for one element or compound to lose electrons and be ( oxidized, rarely, reduced, oxidation, reduction ), another element or compound must be there to gain the electrons and be ( reduced, rarely, oxidized, oxidation, reduction ). In other words, ( oxidation, rarely, oxidized, reduced, reduction ) (loss of electrons) must be accompanied by ( reduction, rarely, oxidized, reduced, oxidation ) (gain of electrons).