The Physics
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Opus in profectus

Binding Energy

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Problems

practice

  1. Write something.
  2. Write something.
  3. Write something.
  4. Write something.

numerical

  1. The fuel used in most high-yield thermonuclear weapons is solid lithium 6 deuteride. These weapons, commonly known as "hydrogen bombs" or "H-bombs", use the energy released when a nucleus of light lithium (63Li, m = 6.015121 u) and heavy hydrogen, also known as deuterium (21H, m = 2.0140 u), fuse to form two nuclei of ordinary helium (42He, m = 4.00260 u).
    1. Write this nuclear reaction out in symbolic form.
    2. What is the mass defect when one molecule of lithium 6 deuteride is transformed into two atoms of helium? State your answer in…
      1. atomic mass units
      2. megaelectronvolts
      3. joules
      4. kilograms
  2. Masses of selected isotopes
    isotope mass (u)
    0−1e000.000548579903
    10n001.008664904
    11p001.007276470
    11H001.007825
    21H002.0140
    31H003.01605
    32He003.01603
    42He004.00260
    3215P031.973907
    3216S031.972070
    9236Kr091.926270
    10345Rh102.905500
    10445Rh103.906651
    14156Ba140.910581
    20682Pb205.97440
    21084Po209.982848
    23592U235.043924
    Calculate the binding energy (in MeV) liberated in each of the following nuclear reactions.
    1. Alpha decay

      21084Po → 20682Pb + 42He

    2. Beta decay, isolated

      10n → 11H + 0−1e + 00ν̅

    3. Beta decay, nucleic

      3215P → 3216S + 0−1e + 00ν̅

    4. Neutron capture

      10n + 10345Rh → 10445Rh

    5. Fusion

      21H + 21H → 31H + 11H

    6. Fission

      10n + 23592U → 14156Ba + 9236Kr + 310n

    This question is also available as a standalone worksheet.