A radioactive nucleus undergoes a single decay event to produce a new nucleus and radiation.
Which statement correctly describes the products of such a decay?
In β+\beta^+β+ (beta-plus) decay, a nucleus of a different element is formed and a positron is emitted.
In γ\gammaγ (gamma) decay, a nucleus of a different element is formed and a high-energy photon is emitted.
In α\alphaα (alpha) decay, a nucleus of the same element is formed and a helium-4 nucleus is emitted.
In β−\beta^-β− (beta-minus) decay, a nucleus of the same element is formed and an electron is emitted.
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.