Polonium-218 is a radioactive isotope.
The nuclide notation for polonium-218 is 84218Po^{218}_{84}\text{Po}84218Po. Describe the composition of a neutral atom of polonium-218.
A nucleus of polonium-218 decays to an isotope of lead (Pb\text{Pb}Pb) by emitting an alpha particle. Complete the nuclide equation for the decay of polonium-218.
84218Po→ ___ α+ ___ Pb ^{218}_{84}\text{Po} \rightarrow \text{ \_\_\_ }\alpha + \text{ \_\_\_ }\text{Pb} 84218Po→ ___ α+ ___ PbA detector of radiation is placed near a sample of polonium-218 and gives a reading of 960 counts/s960\text{ counts/s}960 counts/s. The half-life of polonium-218 is 3.0 minutes3.0\text{ minutes}3.0 minutes. Calculate the reading after 12.0 minutes12.0\text{ minutes}12.0 minutes. Ignore background radiation.
120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.