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Question

Obtain the binding energy of a nitrogen nucleus (7N14) from the following data: mH=1.00783 a.m.u., mn=1.0087 a.m.u.; mN=14.00307 a.m.u.

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Solution

mH = 1.00783 amu
mn = 1.0087 amu
mN = 14.0030u amu
In7N14, these are 7 protons and 7 neutrons.
mass defect,Δ=(7mH+7mn)mN
=(7×1.00783)+(7×1.00807)-14.00307=0.11243 amu
Binding energy of nitrogen nucleus
= Δ×931 MeV =0.11243×931
=104.67

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