Glossary
Previous Question
Electron
Electrons are negatively charged particles that surround the atom's nucleus. Electrons were discovered by J. J. Thomson in 1897.
Particle Data
| Symbol | Mass | Half-life | Charge | Spin |
| e- | 0.511 MeV | stable | -1 | 1/2 |
Citation and linking information
For questions about this page, please contact Carol McKisson.