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Question

# The energy released per fission of a 92U235 nucleus is nearly200eV20eV200MeV2000eV

A
200eV
B
200MeV
C
2000eV
D
20eV
Solution
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#### The fission process represented by the equation, 92U235+0n1→56Ba144+36Kr89+30n1Masses of reactants =234.39+1.01=235.4amu Masses of products =143.28+88.89+3(1.01)=235.2amuEnergy released = mass difference =235.4−235.2=0.2amu=0.2×931∼200MeV

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