Blackline Master 7.4.-1
NAME: ____________________________DATE:________________________
7.4-1 Mass Defect and Binding Energy
Use the table of values to determine the mass defect and the
binding energy (in MeV) of the following isotopes.
1. Carbon-15; actual mass is 15.010 60 u
Particle
proton
neutron
electron
Mass (u)
1.007 276
1.008 665
0.000 549
2. Nitrogen-11; actual mass is 11.0268 u
3. Fluorine-18; actual mass is 18.000 94 u
4. Beryllium-6; actual mass is 6.019 73 u
Use the table of values to determine the energy yield
(in J) of the following fission reaction.
5.
235
92
U + 01 n 
BLM 7.4-1
92
36
1
Kr  141
56 Ba  3( 0 n)
Particle
neutron
uranium-235
xenon-140
strontium-93
krypton-92
barium-141
Mass (u)
1.009
235.044
39.922
92.914
91.926
140.914
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