Editing Nucleophile (section)

== History and etymology ==
The terms ''nucleophile'' and ''[[electrophile]]'' were introduced by [[Christopher Kelk Ingold]] in 1933,<ref>{{cite journal | doi = 10.1039/jr9330001120| title = 266. Significance of tautomerism and of the reactions of aromatic compounds in the electronic theory of organic reactions| journal = Journal of the Chemical Society (Resumed)| pages = 1120| year = 1933| last1 = Ingold| first1 = C. K.}}</ref> replacing the terms ''anionoid'' and ''cationoid'' proposed earlier by [[A. J. Lapworth]] in 1925.<ref>{{cite journal|last = Lapworth|first= A.|journal= [[Nature (journal)|Nature]] |date=1925|volume= 115|page= 625|title = Replaceability of Halogen Atoms by Hydrogen Atoms}}</ref> The word nucleophile is derived from [[atomic nucleus|nucleus]] and the Greek word [[-phil-|φιλος, philos]], meaning friend.{{cn|date=April 2025}}