Anatomy

What subatomic particles are responsible for most of an atom's mass?

Asked by arwen46 12 years ago 5/9/2013 3:14 AM

Last updated by anonymous 12 years ago 5/11/2013 1:23 AM

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Answered by Dr. John Carmen 12 years ago 5/11/2013 1:23 AM

Protons are responsible for most of an atom's mass.