MCQ
The mass defect per nucleon is called:
- ABinding energy
- ✓Packing fraction
- CIonisation energy
- DExcitation energy
✓
Answer
Correct option: B.
Packing fraction
Nuclear binding energy can be computed from the difference in mass of a nucleus, and the sum of the masses of the number of free neutrons and protons that make up the nucleus. Once this mass difference, called the mass defect or mass deficiency, is known, Einstein's mass$-$energy equivalence formula can be used to compute the binding energy of any nucleus.
Early nuclear physicists used to refer to computing this value as a "packing fraction" calculation.
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