The atomic mass of uranium 92U238 is 238.0508 u, that of thorium 90Th2 – InterviewSolution

1.	The atomic mass of uranium 92U238 is 238.0508 u, that of thorium 90Th234 is 234.0436 u and that of an alpha particle 2He4 is 4.0026 u. Determine the energy released when α−decay converts 92U238 into 90Th234. [1u×c2=931.5 MeV]
Answer» The atomic mass of uranium $_{92} U^{238}$ is $238.0508 u$ , that of thorium $_{90} {Th}^{234}$ is $234.0436 u$ and that of an alpha particle $_{2} {He}^{4}$ is $4.0026 u$ . Determine the energy released when $α - decay$ converts $_{92} U^{238}$ into $_{90} {Th}^{234}$ . $[1 u \times c^{2} = 931.5 MeV]$

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