Between protons, electrons and neutrons what takes up more space, which has more mass and which one has the leest mass
The Mass of an electron is 9.11x10^-31 kg
The mass of a proton is 6.67x10^-27kg a neutron is slightly heavier but you can assume it has the same mass as a proton
Protons and neutrons have the I think has the same mass. But electron is smaller ( 1/1842) (1 divide by 1842 I think)
I agree with username:rick18895.