1. a Sketch a graph to show how the binding energy per nucleon varies with nucleon number for elements up to atomic number 92.
2. b How can you use your graph to indicate which nuclei are the most stable?
3. c Indicate the region where nuclear fusion can occur to produce energy.
4. d Suggest why the value for iron is significant.
5. e Indicate the region where nuclear fission can occur to produce energy.