Which subatomic particles contribute to the atomic mass for any given element?

Name: Which subatomic particles contribute to the atomic mass for any given element?
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Question

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The atomic mass of an element is determined by the number of protons and neutrons in the nucleus, so both of these subatomic particles contribute to the atomic mass. Electrons are not included in the atomic mass because they have very little mass in comparison to protons and neutrons.

Which Subatomic Particles Contribute to the Atomic Mass for Any