Proton and neutron has a size of 10-13 cm (approx. 1,5-2 fm). The diameter of the electron may be cca. 10-17 m but this is only a calculated value and is not very sure.
The electron is the smallest having about 1/1836th the mass of a proton or neutron, which means that basically an electron has no mass. The neutron and proton weigh the same both having a mass of 1.
No. Electrons, protons and neutrons are all considered to be separate elementary particles. Each one of these particles is made up of even smaller particles. Note, though, that the each of the...
protons are posotively charged and electrons are negatively charged the neutrons are not on rubber there are less protons. over 5 electrons so its negatively charged cscscsafewqfdewqdrwe