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Do the proton and the neutron have exactly the same mass? How do the masses of the proton and the neutron compare with the mass of the electron? Which particles make the greatest contribution to the mass
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Do the proton and the neutron have exactly the same mass? How do the masses of the proton and the neutron compare with the mass of the electron? Which particles make the greatest contribution to the mass of an atom? Which particles make the greatest contribution to the chemical properties of an atom?

User Krilovich
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Answer:yes they have the same mass.

2,000 times as massive as an electron.

The nucleus

electrons make the greatest contribution to the chemical properties of the atom.

Step-by-step explanation:

User Wube
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