A positron is an antiparticle of a what?

A positron is an antiparticle of an electron. Antiparticles are particles that have the same mass as their corresponding particles but possess opposite electrical charge. In the case of the electron and the positron, the electron has a negative charge while the positron has a positive charge. When a positron collides with an electron, they annihilate each other, releasing energy in the form of gamma rays. The study of these antiparticles helps expand our understanding of particle physics and the fundamental building blocks of the universe.