Q10(a). Argon mass defect and packing fraction
Calculate the packing fraction, mass defect and energy released in the formation of Argon atom, ⁴⁰₁₈Ar. Mention the significance of the packing fraction so calculated. [Given: mass of proton = 1.007825 a.m.u.; mass of neutron = 1.008665 a.m.u.; isotopic mass of Ar = 39.962384 a.m.u.; 1 a.m.u. = 931.5 MeV]
Answer in brief
f=-9.404×10⁻⁴ (or 10⁴f=-9.404); Δm=0.369096 u; binding energy =343.813 MeV per atom/nucleus formed.
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CoversArgon mass defectpacking fractionNuclear binding energy
All parts of Question 10
- 10(a) Argon mass defect and packing fraction15 marks
- 10(b) Praseodymium magnetic moment10 marks
- 10(c) Completing nuclear reactions5 marks