Exam-style question
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Why do some nuclei emit radiation?.
- A.To increase their mass
- B.To achieve a more stable configuration
- C.To gain additional protons
- D.To decrease their energy levels
Model answer
What a good answer should say
- To achieve a more stable configuration
Explanation
Why this works
Some nuclei emit radiation as a mechanism to achieve a more stable configuration. This emission occurs when the forces within the nucleus are imbalanced, leading to excess energy or an unfavorable ratio of protons to neutrons.
By emitting radiation, the nucleus can transform into a more stable state, reducing its energy and improving its stability.
Common mistake
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