Electrons do not make an important contribution to the mass of an atom.

Name: Electrons do not make an important contribution to the mass of an atom.
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Question

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The mass of an atom is primarily determined by the combined mass of its protons and neutrons, which are located in the nucleus. Electrons have a much smaller mass compared to protons and neutrons, making their contribution to the overall mass of an atom negligible.

Electrons Do Not Make an Important Contribution to the Mass