CAIE A-Level Physics AS 11.1.11 And Decay By a Radioactive Decay Equation of the Form Ut H92 238 90 234 Questions

Complete alpha and beta decay equations and chains by tracking nuclide notation, emitted particles and conserved nucleon and proton numbers.

Exam points

Write alpha and beta decay equations with correct nuclide, particle and lepton notation.
Use conservation of nucleon and proton numbers to complete multi-step decay equations and chains.

[Maximum number: 2]

The nuclide ${ }_{1}^{3} \mathrm{H}$ is an isotope of hydrogen that is called tritium.

Tritium is radioactive and undergoes $\beta^{-}$ decay to form an isotope of helium (He). Gamma radiation is not emitted during this decay.

Complete the equation to represent the radioactive decay of tritium.

{}_{1}^{3}\mathrm{H}\rightarrow{}_{\ldots}^{\ldots}\mathrm{He}+{}_{\ldots}^{\ldots}\beta+{}_{0}^{0}\mathrm{X}

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