An Excited $^{236} _{92}$ U^∗ Nucleus Undergoes Fission into Two Fragments as Follows

An excited $^{236} _{92}$ U^∗ nucleus undergoes fission into two fragments as follows: $^{236} _{92}$ U^∗ → $\begin{array} { c } 144 \\56\end{array}$ Ba + ${}^{92}_{36}$ Kr The following atomic masses are known: ${}^{92}_{36}$ Kr: 91.926270 u $\begin{array} { c } 144 \\56\end{array}$ Ba: 143.922845 u $^{236} _{92}$ U^∗: 236.045563 u
What is the reaction energy released during this fission reaction? (1 u = 931.5 MeV/c²)

A) 150 MeV
B) 160 MeV
C) 170 MeV
D) 180 MeV
E) 190 MeV

Correct Answer:

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