Respuesta :
Answer:
Note that the energy emitted depends on the isotope that is decaying; the figure of 0.96 MeV applies only to the decay of carbon-11. The short-lived positron emitting isotopes 11C, 13N, 15O and 18F used for positron emission tomography are typically produced by proton irradiation of natural or enriched targets.
Explanation: They won't last long since the isotope is decaying.
When carbon-11 atom undergoes positron emission, It will not last long as the decomposition of the isotope takes place.
What is Positron ?
A subatomic particle with the same mass as an electron and a numerically equal but positive charge.
Isotope decayis a process in which an atom spontaneously gives off radiation in the form of energy or particles to reach a more stable state.
Hence, When carbon-11 atom undergoes positron emission, It will not last long as the decay of the isotope takes place.
Learn more about radioactive decay here ;
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