Cobalt-59 is a stable isotope of cobalt, while cobalt-60 is a radioactive isotope of cobalt used in medical radiotherapy.
Specify one similarity and one difference in terms of the subatomic particles located within the nucleus of a cobalt-59 atom compared to a cobalt-60 atom.
81 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.