Question

what is the charge on mass of electron proton and neutron and who discovered it?

Answer 1

charge of electron is negative and JJ Thomson discovered it

charge of proton is positive and Rutherford discovered it

charge of neutron is neutral and Chadwick discovered it

Answer 2

electron has a negative charge discovered by JJ Thomson
protons have positive charge discovered by Rutherford.
neutrons have neutral charge discovered by Chadwick

hope it helps u mate...
pls mark me brainliest