Becquerel and Radioactive Decay Quiz
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Questions and Answers

Which radionuclide is transforming faster than Uranium-238?

  • Thorium-234 (correct)
  • Sulfur-35
  • Phosphorus-32
  • None of the above
  • What is the half-life of Thorium-234 in days?

  • 24.1 days (correct)
  • 4.5 x 10^9 years
  • 87 days
  • 14.3 days
  • How does the activity of 1/6g of Phosphorus-32 compare to that of 1g of Sulfur-35?

  • Not related
  • 6 times less
  • 6 times greater
  • Equivalent (correct)
  • Which unit is used to measure the quantity of radioactivity based on the number of decays within a given time?

    <p>Activity (B)</p> Signup and view all the answers

    Approximately how many times faster is Radiophosphorus decaying compared to Sulfur-35?

    <p>6 times (D)</p> Signup and view all the answers

    What does the text suggest about the usefulness of the gram as a unit for quantity in radioactivity?

    <p>It is not useful (A)</p> Signup and view all the answers

    What is the definition of the becquerel, in terms of radioactive material?

    <p>The quantity of radioactive material in which one atom is transformed per second (C)</p> Signup and view all the answers

    In the context of the becquerel, what does 'dps' stand for?

    <p>Disintegrations per second (B)</p> Signup and view all the answers

    For a pure beta emitter, how many beta particles are emitted per second for 1 Bq?

    <p>One beta particle (C)</p> Signup and view all the answers

    Which radionuclide releases 3 radiations per second for 1 Bq?

    <p>$^{60}Co$ (B)</p> Signup and view all the answers

    What is the equivalent of 1 terabecquerel in becquerels?

    <p>$10^{12}$ Bq (D)</p> Signup and view all the answers

    Why is the becquerel considered to be a measure of quantity and not the rate of transformation?

    <p>It only signifies the amount of radioactive material present (D)</p> Signup and view all the answers

    Study Notes

    Radionuclides and Radioactivity

    • Thorium-234 is transforming faster than Uranium-238.
    • The half-life of Thorium-234 is 24.1 days.
    • The activity of 1/6g of Phosphorus-32 is 6 times greater than that of 1g of Sulfur-35.
    • The unit used to measure the quantity of radioactivity based on the number of decays within a given time is the becquerel (Bq).

    Becquerel Definition and Context

    • The becquerel is defined as one radioactive decay per second.
    • In the context of the becquerel, 'dps' stands for decays per second.
    • For a pure beta emitter, 1 Bq is equivalent to one beta particle emitted per second.

    Radionuclides and Becquerel

    • Thorium-234 releases 3 radiations per second for 1 Bq.
    • 1 terabecquerel (TBq) is equivalent to 1,000,000,000,000 Bq.

    Becquerel as a Measure of Quantity

    • The becquerel is considered a measure of quantity and not the rate of transformation.
    • The gram is not a suitable unit for measuring radioactivity due to the varying activities of different radionuclides.

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    Description

    Test your knowledge on the becquerel unit and radioactive decay with this quiz. Learn about the relationship between becquerels, transformations, and disintegrations per second.

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