Short answerEasy2 marks
Represent the change in the nucleus of a radioactive element when a β particle is emitted.
Topic: Nuclear physics / radioactivity
Previous-year question practice database
Answer
Exam answer
ᴬ_ZX → ᴬ_{Z+1}Y + ⁰₋₁β.
Explanation
In beta-minus decay, mass number stays unchanged and atomic number increases by one.
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