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Physics (AS & A Level) · May / June 2016 · Paper 11 · Question 39

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

As printed in the paper

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

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