Exam-style question
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What are the likely decay modes for a nucleus with a neutron-proton ratio greater than 1.5?.
Model answer
What a good answer should say
- The nucleus is likely to undergo beta decay as it has an excess of neutrons compared to protons.
Explanation
Why this works
This answer is strong because it directly relates the neutron-proton ratio to the decay mode, demonstrating an understanding of nuclear stability. It tests the ability to predict decay modes based on qualitative analysis of nuclear composition.
Common mistake
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