Multiple Choice
Why is it that we find no free (unbound) neutrons floating around in the universe today, whereas free protons and electrons exist in profusion?
A) Free neutrons decay spontaneously to produce protons, electrons, and neutrinos.
B) The free neutrons interact quickly with the free electrons to produce antiprotons, so there are few neutrons left.
C) The original Big Bang produced only charged particles; hence neutrons were not produced, and those that now exist in the nuclei of atoms have come from proton decay.
D) Free neutrons react readily with free protons to produce high-energy photons, or γ radiation.
Correct Answer:
Verified
Correct Answer:
Verified
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