Plot a graph showing the variation of binding energy per nucleon … - Vidyadip

Question

Plot a graph showing the variation of binding energy per nucleon as a function of mass number. Which property of nuclear force explains the approximate constancy of binding energy in the range 30 < A < 170? How does one explain the release of energy in both the processes of nuclear fission and fusion from the graph?

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Answer

Nuclear force is Saturated, or short ranged The final system is more tightly bound when heavy nucleus undergoes nuclear fission. Hence, there is a release of energy. The final system is more tightly bound when light nuclei undergoes nuclear fusion. Hence, there is a releases of energy.
Alternate Answer
There is an increase in BE/nucleon both during:

Nuclear fission of heavy nuclei and,
Nuclear fussion of light nuclei Nuclear.

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