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Physics · Oct / Nov 2017 · Paper 12 · Question 40

5054Radioactive decay

A nucleus of phosphorus $^{32}_{15}\text{P}$ emits a beta-particle to form a new nucleus. What is the nucleon number and what is the proton number of the new nucleus?

  1. Anucleon number 28, proton number 13
  2. Bnucleon number 31, proton number 14
  3. Cnucleon number 31, proton number 15
  4. Dnucleon number 32, proton number 16

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Correct answer: D. nucleon number 32, proton number 16

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