Question

what is mean by electrons and how to find it​

Answer 1

electrons are the negatively charged particles of an atom and they revolve around the atom in circular orbits called shells

Answer 2

HI MATE, The electron is a subatomic particle, symbol 

The electron is a subatomic particle, symbol e−

The electron is a subatomic particle, symbol e− or 

The electron is a subatomic particle, symbol e− or β−

The electron is a subatomic particle, symbol e− or β−, whose electric charge is negative one elementary charge.

1eV=1.6×10^-19C...