A-LevelPhysicsNuclear physics9702/12 · Feb/Mar 2022 · Q391 Mark
A nucleus X is radioactive and decays into a nucleus Y. X and Y are isotopes of the same element. Which combination of particles could have been emitted during the decay process?
A1 α-particle and 1 β⁻ particle
B1 α-particle and 2 β⁻ particles
C2 α-particles and 1 β⁻ particle
D2 α-particles and 2 β⁻ particles
✓ Correct answer
B: 1 α-particle and 2 β⁻ particles
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