An induced fission event occurs when a uranium-236 nucleus splits to produce barium-144, krypton-89, and three free neutrons.
NuclideBinding energy per nucleon / MeV092236U7.50056144Ba8.30036089Kr8.60 \begin{array}{|c|c|} \hline \text{Nuclide} & \text{Binding energy per nucleon / MeV} \\ \hline ^{236}_{\phantom{0}92}\text{U} & 7.50 \\ \hline ^{144}_{\phantom{0}56}\text{Ba} & 8.30 \\ \hline ^{\phantom{0}89}_{\phantom{0}36}\text{Kr} & 8.60 \\ \hline \end{array} Nuclide092236U056144Ba036089KrBinding energy per nucleon / MeV7.508.308.60What is the energy released in this fission reaction?
84 MeV84\text{ MeV}84 MeV
106 MeV106\text{ MeV}106 MeV
191 MeV191\text{ MeV}191 MeV
1961 MeV1961\text{ MeV}1961 MeV
128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.