compare the proporities of electron proton and neutron

(i)Electrons are present outside the nucleus of an atom.(i)Protons are present in the nucleus of an atom.(i)Neutrons are present in the nucleus of an atom.(ii)Electrons are negatively charged.(ii)Protons are positively charged.(ii)Neutrons are neutral.(iii)The mass of an electron is considered to negligible.(iii)The mass of a proton is approximately 2000 times as the mass of an electron.(iii)The mass of neutron is nearly equal to the mass of a proton.

1. they all are subatomic particles
2. they all have masses and are fundamental constituents of matter
3. they all work in coordination to stabilize an atom
4. none of them can be isolated from the regular system of an atom