Represent Neutrons, Protons and Electrons using symbols, indicating the masses and charges in amu. Who discovered the neutral particle among the above three particles?
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Au is the SI symbol for atomic mass unit.
The positive charge of protons cancels the negative charge of the electrons. Neutrons have no charge.
With regard to mass, protons and neutrons are very similar, and have a much greater mass than electrons. Compared with neutrons and protons, the mass of an electron is usually negligible.
Spin is associated with the rotation of a particle. Protons, neutrons, and electrons each have a total spin of 1/2.
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