The binding-energy-per-nucleon versus mass-number curve shows four nuclei W, X, Y and Z. Which process would release energy? Image
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Question

The binding-energy-per-nucleon versus mass-number curve shows four nuclei W, X, Y and Z. Which process would release energy? Image

G1 Physics · Accepted Answer

Energy release is determined by total binding energy. A process releases energy when the products have greater total binding energy than the parent. Reading the BE/A values and mass numbers from the graph, the process W → 2Y increases total binding energy. Correct answer: C.