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Radioactivity (A-level only)

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Question 33

In the thorium decay series, a nucleus of thorium-232 (90232Th^{232}_{90}\text{Th}90232​Th) undergoes a sequence of radioactive decays consisting of three α \alpha\,α emissions and two β−\beta^-β− emissions.

Which nuclide is formed as a result of these decays?

A

82220Pb^{220}_{82}\text{Pb}82220​Pb

B

84220Po^{220}_{84}\text{Po}84220​Po

C

86220Rn^{220}_{86}\text{Rn}86220​Rn

D

88224Ra^{224}_{88}\text{Ra}88224​Ra

Markscheme

Radioactivity (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Radioactivity (A-level only)

128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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