Body face
- elementary particle, a charged lepton (first generation)
- charge −e=−1.602×10−19 C, spin 1/2 (fermion)
- mass 9.109×10−31 kg (0.511 MeV/c²), about 1/1836 of the proton mass
- stable, no known internal structure
- antiparticle: positron
- in atoms: described by orbitals (wavefunctions), no classical path