A sample of a radioactive isotope has an initial mass of 480 g.
The half-life of this radioactive isotope is 12 years12\text{ years}12 years.
Calculate the mass of this radioactive isotope remaining after 12 years12\text{ years}12 years.
90 exam-style questions on Edexcel GCSE Physics 6.3 Nuclear equations and decay. Each one has a worked solution and a mark scheme showing where the marks go.