This question is about nuclear fission and fusion. (a) The graph shows the variation of binding energy per nucleon for nuclides with a nucleon number greater than 40. 9.57 9.0- binding energy 8.5- per nucleon / MeV 8.0 7.5- 7.0+ 40 60 80 100 120 140 160 180 200 220 240 nucleon mumber (i) Define binding energy. (i) On the graph, label with the letter S the position of the most stable nuclide. (i) State why the nuclide you have labelled is the most stable. Need detail answer of all parts

This question is about nuclear fission and fusion. (a) The graph shows the variation of binding energy per nucleon for nuclides with a nucleon number greater than 40. 9.57 9.0- binding energy 8.5- per nucleon / MeV 8.0 7.5- 7.0+ 40 60 80 100 120 140 160 180 200 220 240 nucleon mumber (i) Define binding energy. (i) On the graph, label with the letter S the position of the most stable nuclide. (i) State why the nuclide you have labelled is the most stable. Need detail answer of all parts