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JEE Main 2022 (26 Jun, Shift 1) · Radioactive Decays: Alpha, Beta, Gamma

Radioactive Decays: Alpha, Beta, Gamma question from JEE Main 2022 (26 Jun, Shift 1)

Q16JEE Main 2022 · 26 JUN · SHIFT 1Easy

Radioactive Decays: Alpha, Beta, Gamma

How many alpha and beta particles are emitted when Uranium 92U238 decays to lead 82Pb206?

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Answer: (d)

  1. nα=238−2064=8n_\alpha = \dfrac{238 - 206}{4} = 8
  2. After 8α8\alpha: Z=92−16=76Z = 92 - 16 = 76.
  3. nβ=82−76=6n_\beta = 82 - 76 = 6
  4. So the answer is (d) 8 alpha particles and 6 beta particles.
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