The graph of binding energy per nucleon against nucleon number rises steeply, peaks near iron, and then falls slowly.
Using the idea of binding energy per nucleon, explain why energy is released in both nuclear fusion and nuclear fission, and why iron is the most stable nucleus.
Aim for 100–200 wordsWrite in clear, linked sentences using correct physics terms.
Scaffolding hints
A higher binding energy per nucleon means a more stable nucleus.
Iron lies at the peak of the curve, so it has the greatest binding energy per nucleon and is the most stable.
Your answer
Write a clear, structured response. Include definitions, equations with units, and a concluding statement.
