Which isotope of phosphorous is most likely to be a positron emitter?

Name: Which isotope of phosphorous is most likely to be a positron emitter?
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Question

Quizplus · Accepted Answer

²⁹P is most likely to be a positron emitter because it has a proton-rich nucleus. Positron emission occurs when a proton in the nucleus is converted into a neutron and a positron, which is emitted from the nucleus. The proton-rich nucleus of ²⁹P makes it more likely for this process to occur.

Which Isotope of Phosphorous Is Most Likely to Be a Positron