Question

Which of the following nuclides are most likely to decay via positron emission?

Group of answer choices

Cs-137

N-14

Al-24

K-42

I-131

Answer 1

No. of (p) Mass Given No. of Protons No. neutrons (n) wpratic 1.49 M Element 55 1.21 1) (6-137 2) N-14 3 k-42 2) I-131 5) Al-22 137 14 42 131 24 1.47 0.84 13 Above the chart shows only Al-24 has nlp ratio lower than stability region, so Al-24 is most likely to decay via positron emission.

In case of one proton is comented positron. positron emission, one ne nentron with emission of lps on & the Proton Neutron Position. Now, we know, the nucles of a those elements have pratio is 1.0 - 1.52 are considered to be stable. Those elements lying below the stability region, they readily decays position to Increase their pratio so that can they geheive the stability range.

In Positron emission , proton is converted into neutron with emission of positron.