Key term for Edexcel GCSE Physics, used in Radiation Types.
An unstable version of an element that emits ionising radiation as it decays to become more stable.
Radioactive isotope appears in Edexcel GCSE Physics revision content for Radioactivity, especially Radiation Types and Origins of Background Radiation.
Create a free account to access Edexcel GCSE Physics revision notes, track progress, and practise related key terms.
