A-LevelPhysicsNuclear physicsMay/June 2011Paper 1 Q401 Mark
Radon-220 is radioactive and decays to polonium-216 with the emission of an α-particle. The equation for the radioactive decay is shown. ²²⁰Rn -> ²¹⁶Po + ⁴He How many neutrons are in the radon and polonium nuclei?
ARn: 86, Po: 84
BRn: 134, Po: 132
CRn: 220, Po: 212
DRn: 220, Po: 216
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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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