Historically the dining room is furnished with a rather large dining table and a number of dining chairs; the most common shape is generally rectangular with two armed end chairs and an even number of un-armed side chairs along the long sides.
Protons and neutrons do not have the same mass. Their masses are quite close, but they are noticeably different. For some purposes it is okay to equate the neutron and proton mass, but it's just an approximation.Also, neutrons decay into a proton, an electron and an antineutrino.rotons and neutrons do not have the same mass. Their masses are quite close, but they are noticeably different. For some purposes it is okay to equate the neutron and proton mass, but it's just an approximation.
Neutrons are the particles of the nucleus that have no charge. All neutrons are identical. Neutrons, with the mass of 1.674928 * 10^-24g, are slightly more massive than protons, but the difference in mass is so small that neutrons are also given an atomic mass of 1 amu. A neutron has slightly more mass than a proton.eutrons are neutral particles. Surrounding the nucleus is a cloud of very small subatomic particles, called electrons. Electrons are negatively-charged particles. But these basic atomic components are by no means the only known subatomic particles.