Exam-style question
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If a nucleus undergoes beta decay, what particle is emitted?.
- A.Alpha particle
- B.Beta particle
- C.Gamma photon
- D.Neutron
Model answer
What a good answer should say
- Beta particle
Explanation
Why this works
During beta decay, a beta particle (an electron or positron) is emitted as a neutron converts into a proton or vice versa, changing the atomic number.
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