A Plot of the Number of Neutrons Versus the Number

question 37

Multiple Choice

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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