In the uranium radioactive series, the initial nucleus is ²³⁸₉₂U and that the final nucleus is ²⁰⁶₈₂Pb. When uranium nucleus decays into lead, the number of α -particles and β -particles emitted are (a) 4α, 5β (b) 5α, 3β (c) 6α, 7β (d) 8α, 6β

Answer: (d). nα = (238 - 206)/(4) = 8 After 8α: Z = 92 - 16 = 76. nβ = 82 - 76 = 6 So the answer is (d) 8α, 6β.

In the uranium radioactive series, the initial nucleus is ²³⁸₉₂U and… | MHT CET 2024 (3 May, Shift 1)

Q9MHT CET 2024 · 3 MAY · SHIFT 1Easy

Radioactive Decays: Alpha, Beta, Gamma

In the uranium radioactive series, the initial nucleus is ${}^{238}_{92}\text{U}$ and that the final nucleus is ${}^{206}_{82}\text{Pb}$ . When uranium nucleus decays into lead, the number of $\alpha$ -particles and $\beta$ -particles emitted are

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Answer: (d)

$n_\alpha = \dfrac{238 - 206}{4} = 8$
After $8\alpha$ : $Z = 92 - 16 = 76$ .
$n_\beta = 82 - 76 = 6$
So the answer is (d) $8\alpha, 6\beta$ .

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Radioactive Decays: Alpha, Beta, Gamma question from MHT CET 2024 (3 May, Shift 1)

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