Respuesta :
B because protons and neutrons both weigh 1 amu whereas electrons weigh practically nothing.
Protons and neutrons are relatively the same mass, whereas electrons are much lower in mass.
What is the relationship between the mass of electron, proton, and neutron?
Protons and neutrons have an equal mass which is equal to 1.67262 × 10⁻²⁷ kg.
Whereas electrons have almost negligible mass. The mass of an electron is 1/1,836 of a proton.
Learn more about charges and masses of subatomic particles here:
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