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In the nuclear reaction, {:(235),(92):}U...

In the nuclear reaction, `{:(235),(92):}Urarr{:(207),(82):}` Pb, the number of `beta`- particles lost would be

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To solve the problem of determining the number of beta particles lost in the nuclear reaction \( \text{U}^{235}_{92} \rightarrow \text{Pb}^{207}_{82} \), we can follow these steps: ### Step 1: Understand the Reaction In the given nuclear reaction, Uranium-235 (U-235) is transforming into Lead-207 (Pb-207). We need to account for the particles lost during this transformation, specifically the alpha and beta particles. ### Step 2: Represent the Particles - **Alpha Particle**: Represented as \( \alpha \) with a mass number of 4 and an atomic number of 2, denoted as \( \text{He}^{4}_{2} \). - **Beta Particle**: Represented as \( \beta \) with a mass number of 0 and an atomic number of -1, denoted as \( \text{e}^{0}_{-1} \). ...
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