Do the proton and the neutron have exactly the same mass? How do the masses of the proton and the neutron compare with the mass of the electron? Which particles make the greatest contribution to the mass of an atom? Which particles make the greatest contribution to the chemical properties of an atom?
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Do the proton and the neutron have exactly the same mass? No, the proton and the neutron do not have exactly the same mass. The mass of a proton is approximately 1.0073 atomic mass units (amu), while the mass of a neutron is approximately 1.0087 amu. Therefore, Show more…
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