Which statement about β−\beta^-β−-particles and α\alphaα-particles is correct?
β−\beta^-β−-particles are a form of electromagnetic radiation.
β−\beta^-β−-particles are more ionizing than α\alphaα-particles.
The emission of a β−\beta^-β−-particle increases the proton number of the nucleus.
α\alphaα-particles have a greater penetrating depth in air than β−\beta^-β−-particles.
134 exam-style questions on CIE IGCSE Physics 5.2.2a Alpha, beta and gamma emission. Each one has a worked solution and a mark scheme showing where the marks go.