(Neutron-induced fission of 235U)
A thermal neutron is captured by a 235U nucleus leading to the fission reaction
92235U + 01n → 56141Ba + 3692Kr + 3 01n
The relevant atomic masses are:
• 235U = 235.043929 u • 141Ba = 140.914411 u
• 92Kr = 91.926156 u • n = 1.008665 u
Constants: 1 u = 931.5 MeV, NA = 6.022 × 10²³ mol⁻¹, 1 eV = 1.60 × 10⁻¹⁹ J.
Answer the following:
(i) Compute the mass defect associated with one fission event in atomic mass units.
(ii) Calculate the energy released per fission event in MeV.
(iii) Determine the total energy, in joules, that would be released if 1.0 kg of pure 235U underwent complete fission according to the above reaction.