A plot of the number of neutrons versus the number of protons in nuclei shows a narrow band of stable isotopes.By what method(s) can isotopes with a low proton-neutron ratio (i.e. ,ones that fall below the band of stability) decay to form elements that are more stable?
A) positron emission or electron capture.
B) positron emission or neutron capture.
C) beta emission or electron capture.
D) gamma ray emission or beta emission.
E) neutron capture or alpha emission.
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