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Physics (AS & A Level) · May / June 2017 · Paper 12 · Question 39

9702Atoms, nuclei and radiation

A certain nuclide, uranium-235, has nucleon number 235, proton number 92 and neutron number 143. Data on four other nuclides are given below. Which nuclide is an isotope of uranium-235?

  1. Anucleon number 235, proton number 91, neutron number 144
  2. Bnucleon number 236, proton number 92, neutron number 144
  3. Cnucleon number 237, proton number 94, neutron number 143
  4. Dnucleon number 238, proton number 95, neutron number 143

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Correct answer: B. nucleon number 236, proton number 92, neutron number 144

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