Nuclear Binding Energy: The neutral 
Al atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.008665 u; and a proton has a mass of 1.007277 u. What is the binding energy per nucleon for 
Al? (1 u = 931.5 MeV/c2)
A. 8.3 MeV
B. 6.7 MeV
C. 5.4 MeV
D. 3.4 MeV
E. 2.8 MeV
Answer: A
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