A-LevelPhysicsNuclear physics9702/12 · May/June 2017 · Q391 Mark
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? [Table with columns: nucleon number, proton number, neutron number. Rows for A, B, C, D show different values.]
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Anucleon number: 235, proton number: 91, neutron number: 144
Bnucleon number: 236, proton number: 92, neutron number: 144
Cnucleon number: 237, proton number: 94, neutron number: 143
Dnucleon number: 238, proton number: 95, neutron number: 143
✓ Correct answer
B: nucleon number: 236, proton number: 92, neutron number: 144
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