During one decay of curium-244, the plutonium-240 daughter nucleus is formed in an excited state and then emits gamma radiation.
The two emissions are represented together by
96244Cm→94240Pu+24α+00γ {}^{244}_{96}\mathrm{Cm} \rightarrow {}^{240}_{94}\mathrm{Pu} + {}^{4}_{2}\alpha + {}^{0}_{0}\gamma 96244Cm→94240Pu+24α+00γShow, using separate calculations, that the total mass number and the total charge are unchanged by these emissions.
120 exam-style questions on Edexcel GCSE Physics 6.3 Nuclear equations and decay, covering 6.3.1 Beta-minus and beta-plus decay, 6.3.2 Effects of decay on the nucleus, and 6.3.3 Balancing nuclear equations. Each one has a worked solution and a mark scheme showing where the marks go.