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Chemistry 11 Online
OpenStudy (anonymous):

The atomic mass of an atom equals the sum of the masses of the

OpenStudy (accessdenied):

What are the most massive subatomic particles in the atom? The three primary subatomic particles in an atom are protons, neutrons, and electrons. Think about the model of an atom with the protons and neutrons in the center while the electrons are /zooming/ around it.

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