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

Atoms, nuclei and radiation — practice question

Radon $^{222}_{86}\text{Rn}$ starts a decay chain that leads to bismuth $^{214}_{83}\text{Bi}$ by alpha emission and beta emission. When one nucleus of radon decays, how many $\alpha$-particles and $\beta$-particles are emitted?

  • A$\alpha$-particles: 1, $\beta$-particles: 1
  • B$\alpha$-particles: 2, $\beta$-particles: 1
  • C$\alpha$-particles: 1, $\beta$-particles: 2
  • D$\alpha$-particles: 2, $\beta$-particles: 2

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