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

Atoms, nuclei and radiation — practice question

A nucleus releases a $\beta^-$ particle. How do the proton number and the nucleon number of the nucleus change?

  • Aproton number $-1$, nucleon number $+1$
  • Bproton number $0$, nucleon number $-1$
  • Cproton number $+1$, nucleon number $-1$
  • Dproton number $+1$, nucleon number $0$

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