The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.

The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV. If two deutrons are fused to form one ₂⁴He then the energy released is

(a) 30.2 MeV
(b) 25.8 MeV
(c) 23.6 MeV
(d) 19.2 MeV

23.6 MeV

₁H² + ₁H² → ₂He⁴ + energy

.·. Energy released = B.E or ₂He⁴ – 2(B.E. of ₁H²)

= 28 – 2(2.2) = 28 – 4.4 = 23.6 Mev

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