COMEDK · Physics · 28. Atomic Physics
If \(M\) is the atomic mass and \(A\) is the mass number, packing fraction is given by
- A \(\frac{M}{M-A}\)
- B \(\frac{M-A}{A}\)
- C \(\frac{A}{M-A}\)
- D \(\frac{A-M}{A}\)
Answer & Solution
Correct Answer
(B) \(\frac{M-A}{A}\)
Step-by-step Solution
Detailed explanation
Packing fraction is the ratio of mass defect to the number of nucleons. Mass defect is the difference in the actual isotopic mass \((M)\) and mass number \((A)\). \(\therefore\) Packing fraction \(=\frac{M-A}{A}\) where, \(A\) is mass number or number of nucleons.
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