Compared with α\alphaα-particles and β\betaβ-particles, γ\gammaγ-rays:
are the most strongly ionising.
have the greatest penetrating power.
are deflected the most by an electric field.
have the largest mass.
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.