The mass of proton and neutron is approximately equal to July 8, 2019 16 32 64 128 Mass of proton and neutron is equal to The mass of each proton and neutron is approximately equal to The mass of proton and neutron is nearly equal to 3 the mass of each proton and each neutron is approximately equal to The mass of each proton and neutron is equal to Mass of neutron Neutron number
