Nuclear fission is the process powering atomic reactors. In the classic fission of Uranium-235 trigg — Nuclear Chemistry and Radioactivity Chemistry Question
Question
Nuclear fission is the process powering atomic reactors. In the classic fission of Uranium-235 triggered by slow neutron absorption, one pathway yields Xenon-139 and Strontium-94. How many neutrons are concurrently emitted in this specific reaction pathway?
Answer: D
💡 Solution & Explanation
Reaction: ${}_{92}^{235}U + {}_{0}^{1}n \rightarrow {}_{54}^{139}Xe + {}_{38}^{94}Sr + x{}_{0}^{1}n$. Balancing mass numbers: $235 + 1 = 139 + 94 + x(1) \Rightarrow 236 = 233 + x \Rightarrow x = 3$ neutrons.
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