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Physics (AS & A Level) · Feb / March 2019 · Paper 12 · Question 40

9702Atoms, nuclei and radiation

Which word equation represents β+ decay?

  1. Aproton → neutron + electron + electron antineutrino
  2. Bproton → neutron + 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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