C-12 and C-14 are isotopes of carbon.
The nuclide notations for C-12 and for C-14 are:
612Cand614C {}^{12}_{6}\text{C} \quad \text{and} \quad {}^{14}_{6}\text{C} 612Cand614CCompare the number of protons in one nucleus of C-12 with the number of protons in one nucleus of C-14.
Compare the number of neutrons in one nucleus of C-12 with the number of neutrons in one nucleus of C-14.
A sample contains another isotope of carbon. The half-life of this isotope is 20 minutes.
Calculate the time taken for the mass of this isotope in the sample to decay from 80.0 mg to 10.0 mg.
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.