A nucleus has mass number 22 and atomic number 11. It undergoes beta-plus decay. What are the mass number and atomic number of the daughter nucleus?
mass number 222222; atomic number 121212
mass number 222222; atomic number 101010
mass number 212121; atomic number 101010
mass number 212121; atomic number 111111
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.