Key idea
Nuclear binding energy
E_liaison = Δm c² · énergie de liaison par nucléon = E_liaison/A
Binding energy is the energy required to separate a nucleus into its constituent nucleons. It is related to the nucleus’s mass defect through E = Δmc².
Nuclear binding energy
The key idea
Binding energy is the energy required to separate a nucleus into its constituent nucleons. It is related to the nucleus’s mass defect through E = Δmc².
Why it matters
Binding energy per nucleon helps explain why both fusion of light nuclei and fission of very heavy nuclei can release energy.
A picture to remember
Key idea
Nuclear binding energy
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Guided example
Nuclear binding energy
Binding energy is the energy required to separate a nucleus into its constituent nucleons. It is related to the nucleus’s mass defect through E = Δmc².
Put it into practice
Nuclear binding energy
Choose a concrete case linked to Nuclear binding energy. Write down the known information, what you are trying to find, and the units. Then state the rule, model or trend you will use. If a calculation is involved, keep the units visible at every line; if it is conceptual, state what changes and what remains fixed.
Check your answer
A strong answer contains four things: the starting situation, the variable that changes, the direction or numerical result, and one check. The check can be a unit, an order of magnitude, a limiting case or a comparison with a familiar example.