$^{56}\text{Fe}$ has the maximum binding energy per nucleon ($\approx 8.8\,\text{MeV}$), making it the most stable nucleus.
This is why fusion releases energy for lighter elements and fission releases energy for heavier elements.
Back to JEE Main 2021 Modern Physics
JEE Main 2021 — Physics Modern Physics
easy
mcq
2021
Official previous-year question
Verified 30 May 2026.
Question
The binding energy per nucleon is maximum for:
Options
- A
$^{56}\text{Fe}$
- B
$^{238}\text{U}$
- C
$^{4}\text{He}$
- D
$^{2}\text{H}$
Solution
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