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Energy released in fission or fusion from binding energies per nucleon

This type of question, asked 7 times: 14 Jun 2022, 26 Jul 2022, 8 Apr 2023, 27 Jan 2024, 2 Apr 2025, 4 Apr 2026 S1, 6 Apr 2026 S2. All 7 questions below, oldest first.

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  1. Question 1

    14 Jun 2022

    15
    Nucleus AA is having mass number 220 and its binding energy per nucleon is 5.6MeV5.6MeV. It splits in two fragments ' BB ' and ' CC ' of mass numbers 105 and 115. The binding energy of nucleons in ' BB ' and ' CC ' is 6.4MeV6.4MeV per nucleon. The energy QQ released per fission will be:

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  2. Question 2

    26 Jul 2022

    114
    Two lighter nuclei combine to form a comparatively heavier nucleus by the relation given below:  12X+ 12X= 24Y\ _{1}^{2}X +\ _{1}^{2}X =\ _{2}^{4}Y The binding energies per nucleon  12X\ _{1}^{2}X and  24Y\ _{2}^{4}Y are 1.1 MeVMeV and 7.6MeV7.6MeV respectively. The energy released in this process is ____\_\_\_\_ MeV.

  3. Question 3

    8 Apr 2023

    30
    A nucleus with mass number 242 and binding energy per nucleon as 7.6MeV7.6MeV breaks into fragment each with mass number 121. If each fragment nucleus has binding energy per nucleon as 8.1MeV8.1MeV, the total gain in binding energy is ____\_\_\_\_ MeVMeV.

  4. Question 4

    27 Jan 2024

    25
    In a nuclear fission process, a high mass nuclide (A≈236)(A \approx 236) with binding energy 7.6 MeV/Nucleon dissociated into middle mass nuclides (A≈118(A \approx 118 ), having binding energy of 8.6MeV/8.6MeV/ Nucleon. The energy released in the process would be _______ MeVMeV.

  5. Question 5

    2 Apr 2025

    87
    Energy released when two deuterons ( 1H2)\left( \ _{1}H^{2} \right) fuse to form a helium nucleus ( 2He4)\left( \ _{2}He^{4} \right) is : (Given : Binding energy per nucleon of  1H2=1.1MeV\ _{1}H^{2}= 1.1MeV and binding energy per nucleon of  2He4=7.0MeV\ _{2}He^{4}= 7.0MeV )

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  6. Question 6

    4 Apr 2026 S1

    4
    Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a nucleus of mass number 10. If the binding energy per nucleon for the mass number 3, 4 and 10 are 5.6MeV,7.4MeV5.6MeV,7.4MeV and 6.1 MeV , respectively, then in the process, ΔMc2=\Delta Mc^{2}= ____\_\_\_\_ MeV .

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  7. Question 7

    6 Apr 2026 S2

    16
    The energy released if two  12H\ _{1}^{2}H (deuterium) atoms are combined to form  24He\ _{2}^{4}He is ____\_\_\_\_ MeV. (Take binding energies per nucleon of  12H\ _{1}^{2}H and  24He\ _{2}^{4}He as 1.1 MeV and 7.2 MeV, respectively).

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