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Do protons and neutrons have equally mass?

Updated: 8/20/2019
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11y ago

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No, although their masses are very close. The difference is noticed when one considers the internal structure of the particles: a proton is comprised of two up quarks and one down quark, whereas the neutron is comprised of two down quarks and one up quark.

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11y ago
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Q: Do protons and neutrons have equally mass?
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