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Vladimir79 [104]
3 years ago
13

What gives an atom its mass?

Chemistry
1 answer:
saw5 [17]3 years ago
4 0
Almost all of the mass of an atom (more than 99%) is in its nucleus, so "atomic mass" is pretty much a measure of the size of the nucleus of an atom. The nucleus of an atom is made up of protons and neutrons. Protons and neutrons are almost exactly the same size.
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