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{{साचा:सदस्यचौकट फायरफॉक्स}}
{{साचा:सदस्यचौकट मुंबईकर}}
{{Infobox Particle
|name = Electron
|image = [[File:Schattenkreuzröhre-in use-lateral view-standing cross.jpg|280px|alt=A glass tube containing a glowing green electron beam|]]
|caption =Experiments with a [[Crookes tube]] first demonstrated the particle nature of electrons. In this illustration, the profile of the cross-shaped target is projected against the tube face at right by a beam of electrons.<ref>
<cite id="refDahl1997">{{cite book
|first=Per F. |last=Dahl
|year=1997
|title=Flash of the Cathode Rays: A History of J J Thomson's Electron
|page=72
|url=http://books.google.com/?id=xUzaWGocMdMC&printsec=frontcover
|publisher=[[CRC Press]]
|isbn=0750304537
}}</ref>
|num_types =
|composition = [[Elementary particle]]<ref name="prl50"/>
|statistics = [[Fermionic]]
|group = [[Lepton]]
|generation = First
|interaction = [[Gravitation|Gravity]], [[Electromagnetic force|Electromagnetic]], [[Weak interaction|Weak]]
|antiparticle = [[Positron]] (also called antielectron)
|theorized = [[Richard Laming]] (1838–1851),<ref name="farrar"/><br />[[G. Johnstone Stoney]] (1874) and others.<ref name="arabatzis"/><ref name="buchwald1"><cite id="refBaW2001">
{{cite book
|last=Buchwald |first=Jed Z.
|last2=Warwick |first2=Andrew
|year=2001|url=http://books.google.com/?id=1yqqhlIdCOoC&pg=PA195
|title=Histories of the Electron: The Birth of Microphysics
|pages=195–203
|publisher=[[MIT Press]]
|isbn=0262524244
}}</cite></ref>
|discovered = [[J. J. Thomson]] (1897)<ref name="thomson">
{{cite journal
|last=Thomson|first=Joseph John
|year=1897
|title=Cathode Rays
|journal=Philosophical Magazine
|volume=44 |pages=293
|url =http://web.lemoyne.edu/~GIUNTA/thomson1897.html
}}</ref>
|symbol = {{SubatomicParticle|Electron}}, {{SubatomicParticle|beta-}}
|mass={{val|9.10938215|(45)|e=-31|ul=kg}}<ref name="CODATA"/><br />
{{val|5.4857990943|(23)|e=-4|ul=u}}<ref name="CODATA" /><br />
[{{val|1822.88850204|(77)}}]<sup>−1</sup> u<ref group=note>The fractional version’s denominator is the inverse of the decimal value (along with its relative standard uncertainty of {{val|4.2|e=-10|ul=u}}).</ref><br />
{{val|0.510998910|(13)|ul=MeV/c2}}<ref name="CODATA"/>
| electric_charge = −1 [[elementary charge|e]]<ref group=note>The electron’s charge is the negative of [[elementary charge]], which has a positive value for the proton.</ref><br />{{val|-1.602176487|(40)|e=-19|ul=C}}<ref name="CODATA"/>
{{val|-4.803|e=-10|ul=[[Statcoulomb|esu]]}} <ref name="purcell1">
{{cite book
|last = Purcell
|first = Edward M.
|title = Electricity and Magnetism
|publisher = [[McGraw-Hill]]
|series =Berkeley Physics Course Volume 2
|year = 1985
|isbn = 0-07-004908-4}}</cite></ref>
|magnetic_moment = {{gaps|−1.001|159|652|181|11|u=[[Bohr magneton|μ<sub>B</sub>]]}}<ref name="CODATA"/>
|spin = {{frac|1|2}}
}}
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