Exam-style question
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Describe how the binding energy per nucleon varies with nucleon number and its implications for nuclear reactions.
Model answer
What a good answer should say
- The binding energy per nucleon generally increases with nucleon number up to iron, after which it decreases.
- This implies that fusion is energetically favorable for light nuclei, while fission is favorable for heavy nuclei, as both processes release energy.
Explanation
Why this works
This answer effectively summarizes the trend of binding energy per nucleon with nucleon number and connects it to the types of nuclear reactions, demonstrating a comprehensive understanding of the topic. It tests the student's ability to apply knowledge to explain nuclear processes.
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