A student says that beta-minus decay is the loss of an electron from an electron shell. Which observation shows that this description is incorrect?
The emitted particle has the same charge as a shell electron.
The daughter nucleus has the same mass number as the parent.
The daughter nucleus has one more proton than the parent.
The emitted particle has the same mass as a shell electron.
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.