The binding energy per nucleon remains constant at:
Correct answer: A. 8 MeV per nucleon
- A. 8 MeV per nucleon
- B. 7 MeV per nucleon
- C. 6 MeV per nucleon
- D. 9 MeV per nucleon
Explanation
The reason why the binding energy per nucleon peaks at around 8.75 MeV for Fe-56 is because Fe-56 has the optimal ratio of protons to neutrons. For nuclei with fewer protons or neutrons, the nuclear force is not strong enough to bind them together as tightly. For nuclei with more protons or neutrons, the repulsive force between protons becomes too strong, and the binding energy per nucleon decreases.
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About Composition of Atomic Nuclei
Atomic nuclei contain positively charged protons and electrically neutral neutrons, collectively called nucleons. Questions use atomic number, mass number and nuclear notation to identify isotopes, isobars and isotones, and may connect nuclear composition with nuclear charge, mass defect, binding energy and the stability of the nucleus.
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