Exam-style question
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What is the primary factor that determines the decay mode of a radioactive isotope?.
- A.Mass number
- B.Neutron-to-proton ratio
- C.Energy level
- D.Atomic mass
Model answer
What a good answer should say
- Neutron-to-proton ratio
Explanation
Why this works
The decay mode of a radioactive isotope is primarily determined by its neutron-to-proton ratio, which influences stability and the type of decay that occurs.
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