Electron
Electrons are elementary particles with a negative electric charge with spin ½.
Explanation
The electron is the lightest electrically charged lepton. The corresponding anti particle is the positron. Electrons and positrons are fermions.
F E R M I O N S
L e p t o n s E l e c t r o n s e−
electrone+
positron
Electrons move in an atom. The atomic nucleus consists of protons and neutrons.
Additional information
The electron was discovered in 1897 by the British physicist J. J. Thomson.