Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

Sodium-24 is a radioactive isotope which gives out beta radiation. Which nuclear equation represents the decay of sodium-24?

  • A$^{24}_{11}\text{Na} \rightarrow {}^{24}_{12}\text{Mg} + {}^{0}_{-1}\beta$
  • B$^{24}_{11}\text{Na} \rightarrow {}^{24}_{10}\text{Ne} + {}^{0}_{-1}\beta$
  • C$^{24}_{11}\text{Na} \rightarrow {}^{20}_{9}\text{F} + {}^{4}_{2}\beta$
  • D$^{24}_{11}\text{Na} \rightarrow {}^{23}_{13}\text{Al} + {}^{4}_{2}\beta$

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