Which particle is the heaviest and which is lightest?
A positron is a particle of matter with the same mass as an electron.When a positron encounters an electron, the two completely destroy each other, resulting in the complete and direct conversion of all substance to energy.
A Positron is a particle with a mass of an electron.It was discovered in 1930 but not identified until 1932.
There is a reason for the mass difference.
Positron has the same weight as electron and is a sub-atomic particle.