Structure of Matter

According to the modern electron theory, matter is composed of three fundamental particles. these are neutron proton and electron.

Proton is positively charged.

Electron is negatively charged.

Neutron is uncharged.

The mass of neutron and proton is same.

Fundamental Element	Nature of Charge	Mass in Kg
Neutron	No Charge	1.675 x 10-27
Proton	Positive	1.672 x 10-27
Electron	Negative	9.107 x 10-31

 

There is no difference between an electron of copper and an electron of aluminium or an electron of any other element. similarly the neutrons and protons of various atoms or characteristic wise identical in nature.