Radium-223 is a radioactive alpha-emitter used to treat bone metastases in cancer patients. A solution containing radium-223 is injected and builds up in the bone.
Which statement about this treatment is not correct?
Alpha radiation is a form of electromagnetic radiation.
Alpha-particles are a form of ionising radiation.
Radium-223 atoms change to atoms of another element when they decay.
Alpha-particles are positively charged.
484 exam-style questions on CIE IGCSE Physics 5.2 Radioactivity, covering 5.2.1 Background radiation and measuring count rate, 5.2.2a Alpha, beta and gamma emission, 5.2.2b Deflection and ionising effects of nuclear radiation, 5.2.3a Radioactive decay, 5.2.3b Effects of decay on the nucleus and decay equations, 5.2.4a Half-life, 5.2.4b Choosing isotopes for applications, and 5.2.5 Effects of ionising radiation and safety precautions. Each one has a worked solution and a mark scheme showing where the marks go.