Radioactive isotopes can decay by emitting α\alphaα-particles or β\betaβ-particles.
Which statement about how these emissions affect the nucleon number (mass number) of the emitting nucleus is correct?
Only α\alphaα-particles cause the nucleon number of the nucleus to change.
Both α\alphaα-particles and β\betaβ-particles cause the nucleon number of the nucleus to change.
Neither α\alphaα-particles nor β\betaβ-particles cause the nucleon number of the nucleus to change.
Only β\betaβ-particles cause the nucleon number of the nucleus to change.
120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.