Uranium-238 Decays into Thorium-234 Plus an Alpha Particle $\begin{array} { l } 4 \\2\end{array}$

question 124

Multiple Choice

Uranium-238 decays into thorium-234 plus an alpha particle. The known masses are $\begin{array} { l } 4 \\2\end{array}$ He: 4.002603 u $\begin{array} { c } 224 \\90\end{array}$ Th: 234.043583 u $\begin{array} { c } 238 \\92\end{array}$ U: 238.050786 u How much energy is released in this process? (1 u = 931.5 MeV/c²)

• A)4.28 MeV
• B)3.76 MeV
• C)3.18 MeV
• D)2.89 MeV
• E)5.05 MeV

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