Pick the keyword from the given list: The particles that do not exist outside the nucleus.
Answer to Problem AM
Explanation of Solution
Elementary particles are the subatomic particles. Quarks are elementary particles. Protons and neutrons are made up of quarks. Composition of proton is
Inside nucleus there are protons and neutrons made up of elementary particles(quarks). Elementary particles do not exist outside nucleus as outside nucleus electrons orbit around nucleus which is not made up of quarks.
Conclusion:
Therefore, the word elementary particles can be picked from the list.
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