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Does the nucleus (protons and neutrons) weigh more than the electrons?
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Does the nucleus (protons and neutrons) weigh more than the electrons?

User Martin Pilch
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Yes, protons and neutrons weigh much more than electrons. Which is why the mass of an element is the protons and neutrons added together, disregarding the electrons. Their weight is almost negligible.
User Dan Kilpatrick
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The mass of nucleons (and thus of the nucleus) is roughly 1000 times greater than that of electrons.
User Duong Nguyen
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