Carbon-14, 614C{}^{14}_{6}\mathrm{C}614C, and carbon-11, 611C{}^{11}_{6}\mathrm{C}611C, are radioactive isotopes of carbon.
Carbon-14 decays by beta minus decay to form nitrogen. Carbon-11 decays by beta plus decay to form boron.
The atomic number of boron is 5 and the atomic number of nitrogen is 7.
Explain how each decay changes the nucleus, and how each nuclear equation is balanced in terms of mass and charge.
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.