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Question

Helium has a mass number 4 and the atomic number 2. Calculate the nuclear binding energy per nucleon. (mass of neutron =1.00893amu and proton =1.00814amu, He=4.0039amu and mass of electron is negligible).

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Solution

B.E=931.5Mev×(m)
m=(4.00392×1.00812×1.00893)
=0.03016
BE=0.03016×931.5=28.094
BE/nucleon=28.0944=1.038Mev

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