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Alexeev081 [22]
3 years ago
6

Most of the mass of an atom comes from the (blank) and (blank)

Chemistry
2 answers:
dsp733 years ago
5 0
Protons and neutrons make up most of an atom's mass. Electrons have almost no mass.
sveticcg [70]3 years ago
3 0
The protons and neutrons make up most of the atoms mass because they are located in the nucleus, and the nucleus has the most mass. 
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