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3 Which subatomic particles make up a majority of the mass of an atom? 1. Protons 2. Electrons 3. Neutrons A 1 only B 1 and 3 only C 3 only D 2 and 3 only​
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3 Which subatomic particles make up a majority of the

mass of an atom?
1. Protons
2. Electrons
3. Neutrons
A 1 only
B 1 and 3 only
C 3 only
D 2 and 3 only​

User VFlav
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1 Answer

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1 and 3 only, electrons are significantly smaller than both neutrons and protons. Neutrons and protons also make up the biggest part of the atom, the nucleus.
User Fatima Zohra
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