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Physics, 20.10.2020 20:01 cam1976

The atomic mass of an atom do not contain electrons because Electrons do not exist in all atoms.
Electrons are so small that it does not affect the mass of an atom.
Electrons are do not contain mass.
Electrons are not as important as protons and neutrons.

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The atomic mass of an atom do not contain electrons because Electrons do not exist in all atoms.

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