Question

The amount of energy released in the fusion of 1H2 to form a 2He4 nucleus will be :
[Binding energy per nucleon of 1H2=1.1 MeV and 2He4=7 MeV]

A
8.1 MeV
B
5.9 MeV
C
23.6 MeV
D
2 MeV
Solution
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Nuclear reaction: 2 1H2 2He4

Energy released = Binding energy of products Binding energy of reactants.

Total Binding energy = nucleons x binding energy per nucleon

4×72×2×1.1=23.6 MeV

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