Carbon-14 is a radioactive isotope of carbon with an atomic number of 6 and a mass number of 14.
Complete the table below by filling in the missing information about the particles in this atom:
Name of particleNumber of particlesPosition of particleRelative charge of particleelectronneutronin the nucleus6+1 (plus one) \begin{array}{|c|c|c|c|} \hline \textbf{Name of particle} & \textbf{Number of particles} & \textbf{Position of particle} & \textbf{Relative charge of particle} \\ \hline \text{electron} & & & \\ \hline \text{neutron} & & \text{in the nucleus} & \\ \hline & 6 & & \text{+1 (plus one)} \\ \hline \end{array} Name of particleelectronneutronNumber of particles6Position of particlein the nucleusRelative charge of particle+1 (plus one)An archaeological specimen made of ancient charcoal is discovered. When the wood was freshly burned, it contained 24.0 mg24.0\text{ mg}24.0 mg of Carbon-14. The specimen now contains 3.00 mg3.00\text{ mg}3.00 mg of Carbon-14. The half-life of Carbon-14 is 573057305730 years.
Calculate the age of the charcoal specimen.
144 exam-style questions on CIE IGCSE Physics 5.2.4a Half-life. Each one has a worked solution and a mark scheme showing where the marks go.