Find the energy required for separation of a Ne 20 nucleus into two alpha-particles and a C 12 nucleus if it is known that the binding energies per one nucleon in Ne 20 , He 4 , and C 12 nuclei are equal to 8.03, 7.07 and 7.68 MeV respectively.
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Sol. Required energy is simply the difference in total binding energies
( 
is binding energy per unit nucleon.)
Substitution gives 11.88 MeV .
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