Question: 238 U is long-lived but ultimately unstable; it will eventually spontaneously break into two fragments, a 4 He nucleus and a 234 Th nucleus, in

²³⁸U is long-lived but ultimately unstable; it will eventually spontaneously break into two fragments, a ⁴He nucleus and a ²³⁴Th nucleus, in a process called alpha decay, which we'll learn about in the next section. A great deal of energy is released in the process. What must be true about the masses of the nuclei involved? B. mu A. mumTh = mTh+mHe + mlHe C. mu

B. mu A. mumTh = mTh+mHe + mlHe C. mu

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