Atanná (electron) je igbonwo inuatomu ti o ni agbára iná tonidaju, be sini opo re din ni ona egberun si atomu to kere ju lo. The fractional version’s denominator is the inverse of the decimal value (along with its relative standard uncertainty of 4.2×10−10 u). The electron’s charge is the negative of elementary charge, which has a positive value for the proton. Dahl, Per F. (1997). Flash of the Cathode Rays: A History of J J Thomson's Electron. CRC Press. p. 72. ISBN 0750304537. http://books.google.com/books?id=xUzaWGocMdMC&printsec=frontcover.  Àṣìṣe ìtọ́kasí: Invalid <ref> tag; no text was provided for refs named prl50 Àṣìṣe ìtọ́kasí: Invalid <ref> tag; no text was provided for refs named farrar Àṣìṣe ìtọ́kasí: Invalid <ref> tag; no text was provided for refs named arabatzis Buchwald, Jed Z.; Warwick, Andrew (2001). Histories of the Electron: The Birth of Microphysics. MIT Press. pp. 195–203. ISBN 0262524244. http://books.google.com/books?id=1yqqhlIdCOoC&pg=PA195.