What does “Binding energy per nucleon” actually mean in Nuclei, and why does it matter for JEE?
Binding energy per nucleon measures average tightness of binding. Its curve rises toward iron/nickel and then slowly falls, explaining why both fusion of light nuclei and fission of heavy nuclei can release energy.
In simple words: Binding energy per nucleon measures average tightness of binding. Its curve rises toward iron/nickel and then slowly falls, explaining why both fusion of light nuclei and fission of heavy nuclei can release energy. Getting Binding energy per nucleon clear matters because JEE questions on Nuclei usually test this idea directly, not just a formula you memorised.
Key point
Binding energy per nucleon
Common mistake
using total binding energy alone to compare nuclear stability.
Memory tip
compare B/A, not just B.
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