A-LevelPhysicsNuclear physicsFeb/Mar 2021Paper 1 Q391 Mark
The figure shows part of a chart of nuclides where neutron number is plotted against proton number. An unstable nuclide X decays by emitting an α-particle. Which nuclide is formed by the decay of nuclide X?
Anuclide A at (proton number 92, neutron number 141)
Bnuclide B at (proton number 92, neutron number 143)
Cnuclide C at (proton number 93, neutron number 147)
Dnuclide D at (proton number 95, neutron number 144)
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of nuclear physics within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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