Question

What is electron ???

Answer 1

Electron is a subatomic particle of an atom which has negligible mass and is of negative charge.

Answer 2

The electron is a subatomic particle, symbol e− or β− , whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure.

$\underline\bold{Discoverer: J. J. Thomson}$

$\underline\bold{Discovered: 1897}$