Question

The binding energy of deuteron is 2.2 MeV and that of $^4_2$He is 28 MeV. If two deuterons are fused to form one $^4_2He$ then the energy released is :-

• A. 30.2 MeV
• B. 25.8MeV
• C. 23.6 MeV
• D. 19.2MeV

Answer 1

Answer: (C)

23.6 MeV

Answer 2

Energy released $=28-2 \times 2.2=28-4.4=23.6 \,MeV$