A-LevelPhysicsNuclear physicsMay/June 2013Paper 1 Q401 Mark
An actinium nucleus has a nucleon number of 227 and a proton number of 89. It decays to form a radium nucleus, emitting a beta particle and an alpha particle in the process. What are the nucleon number and the proton number of this radium nucleus?
A223
87
B223
88
C224
87
D225
86
✓ 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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