Editing Electron (section)

=== Classification ===
[[File:Standard Model of Elementary Particles.svg|right|thumb|upright=1.25|alt=A table with four rows and four columns, with each cell containing a particle identifier|Standard Model of elementary particles. The electron (symbol e) is on the left.]]
In the [[Standard Model]] of particle physics, electrons belong to the group of subatomic particles called [[lepton]]s, which are believed to be fundamental or [[elementary particle]]s. Electrons have the lowest mass of any charged lepton (or electrically charged particle of any type) and belong to the first [[generation (particle physics)|generation]] of fundamental particles.<ref>
{{cite journal
 | last1 = Frampton | first1 = P.H.
 | last2 = Hung | first2 = P.Q.
 | last3 = Sher | first3 = Marc
 | year = 2000
 | title = Quarks and Leptons Beyond the Third Generation
 | journal = [[Physics Reports]]
 | volume = 330 | issue = 5–6 | pages = 263–348
 | doi = 10.1016/S0370-1573(99)00095-2
 |arxiv = hep-ph/9903387 |bibcode = 2000PhR...330..263F
 | s2cid = 119481188
}}</ref> The second and third generation contain charged leptons, the [[muon]] and the [[tau (particle)|tau]], which are identical to the electron in charge, [[Spin (physics)|spin]] and [[fundamental interaction|interactions]], but are more massive. Leptons differ from the other basic constituent of matter, the [[quark]]s, by their lack of [[strong interaction]]. All members of the lepton group are fermions because they all have half-odd integer spin; the electron has spin {{sfrac|1|2}}.<ref name="raith">
{{cite book
 | last1 = Raith | first1 = W.
 | last2 = Mulvey | first2 = T.
 | year = 2001
 | title = Constituents of Matter: Atoms, Molecules, Nuclei and Particles
 | pages = 777–781
 | publisher = [[CRC Press]]
 | isbn = 978-0-8493-1202-1
}}</ref>