Polonium-210 is a radioactive element that emits alpha (α\alphaα) particles. The nuclide notation for polonium-210 is Po84210Po\vphantom{\text{Po}}^{210}_{84}\text{Po}Po84210Po.
State the number of protons in one nucleus of polonium-210.
Determine the number of neutrons in one nucleus of polonium-210.
A sample containing 120 mg120\text{ mg}120 mg of polonium-210 decays to 15 mg15\text{ mg}15 mg in 414 days414\text{ days}414 days. Calculate the half-life of polonium-210.
Besides inhaled radioactive gases, background radiation is emitted from many other sources. Name two other sources that make a significant contribution to background radiation.
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.