Figure 1 shows the neutron number and the atomic number for five different atomic nuclei, labeled P, Q, R, S, and T.
Based on Figure 1:
Determine the mass number of nucleus Q.
Identify which two nuclei represent isotopes of the same chemical element.
Atoms and isotopes Questions
Practise AQA GCSE Physics Atoms and isotopes with exam-style questions for Foundation and Higher tier. 6 questions covering The structure of an atom, Mass number, atomic number and isotopes, and The development of the model of the atom (common content with chemistry), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.