| − | A '''nucleophile''' is a negatively charged nucleus which is attracted to another positively charged mass; it is similar to an [[electrophile]], except with the polarities and substances reversed. This may cause reactions, labelled as nucleophilic addition, substitution and elimination in that order. | + | A '''nucleophile''' is a negatively charged nucleus which is attracted to another positively charged mass; it is similar to an [[electrophile]], except with the polarities and substances reversed. This may cause reactions, labelled as [[nucleophilic addition]], substitution and elimination in that order. |