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: 1]

Nucleus P has 144 neutrons and 93 protons. Nucleus P is unstable and undergoes $\alpha$ -decay to form nucleus Q. Nucleus Q then undergoes $\beta^{-}$ decay to form nucleus R.

Nucleus P is represented by point P on the graph.
Which point on the graph represents nucleus R?

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CAIE A-Level Physics AS 11.1.11 And Decay By a Radioactive Decay Equation of the Form Ut H92 238 90 234 Questions question 1