Compare the properties of protons, electrons and neutrons.

Protons	Electrons	Neutrons
They are positively charged particles.	They are negatively charged particles.	They are neutral particles.
Charge on protons is +1. Mass of protons is $1.6727\times {10}^{-27}kg$.	Charge on electrons is -1. Mass of electrons is $9.1\times {10}^{-31}kg$.	They have no charge. Mass of neutrons is $1.675\times {10}^{-27}kg$.
Protons are present inside the nucleus.	Electrons are present outside the nucleus. They revolve around the nucleus.	Neutrons are present inside the nucleus.