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Positron
Positrons are electrically positively charged elementary antiparticles with spin ½.
Explanation
A positron is the antiparticle of the electron. It is a lepton of the first generation. 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
In an atom, positrons move. The nucleus of an atom consists of protons and neutrons.
Additional information
The positron was discovered in 1932 by the American astrophysicist Carl Anderson.