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11 September, 13:04

If an atom of thorium-234 were to undergo beta emission twice, which atom would result?

Rn-226

U-234

Th-230

U-238

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Answers (2)
  1. 11 September, 14:55
    0
    Answer: U-234

    Explanation: no matter how much of beta decay, the mass number of the resulting element is unchanged
  2. 11 September, 16:39
    0
    The answer to your question is U-234

    Explanation:

    Data

    Thorium-234

    beta emission twice

    Definition

    Beta emission is when a beta particle (electron) is emitted from an atomic nucleus.

    First beta emission

    ²³⁴₉₀Th ⇒ ²³⁴₉₁Pa + e⁻

    Second beta emission

    ²³⁴₉₁ Pa ⇒ ²³⁴₉₂U + e⁻

    The atom will be Uranium-324
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