Physics 9702 · AS & A Level · Atoms, nuclei and radiation

Atoms, nuclei and radiation — practice question

A nitrogen-13 nucleus $^{13}_{7}\text{N}$ decays by beta emission. In the equations shown below, $\nu$ and $\bar{\nu}$ denote a neutrino and an antineutrino respectively, while $\gamma$ stands for a photon of gamma radiation. Which equation shows this decay?

  • A$^{13}_{7}\text{N} \rightarrow {}^{13}_{6}\text{C} + \beta^- + \bar{\nu} + \gamma$
  • B$^{13}_{7}\text{N} \rightarrow {}^{13}_{6}\text{C} + \beta^- + \nu + \gamma$
  • C$^{13}_{7}\text{N} \rightarrow {}^{13}_{6}\text{C} + \beta^+ + \bar{\nu} + \gamma$
  • D$^{13}_{7}\text{N} \rightarrow {}^{13}_{6}\text{C} + \beta^+ + \nu + \gamma$

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