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Particle Physics

Do protons electrons or neutrons have more mass?


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January 22, 2010 7:57PM


Neutrons and Protons have approximately the same mass, and electrons have comparatively almost no mass!
Protons do have mass, but not very much. A proton's mass is 1.66 x 10-24g, and it takes 6.02 x 1023 of them to make a gram (with thanks to the Italian chemist Avogadro, whom that number is named for).