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Physics (AS & A Level) · Oct / Nov 2025 · Paper 14 · Question 38

9702Atoms, nuclei and radiation

What is the correct equation for β+ decay?

  1. Aneutron → proton + electron + electron antineutrino
  2. Bneutron → proton + electron + electron neutrino
  3. Cproton → neutron + positron + electron antineutrino
  4. Dproton → neutron + positron + electron neutrino

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Correct answer: D. proton → neutron + positron + electron neutrino

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