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Questions and Answers
Which radionuclide is transforming faster than Uranium-238?
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?
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?
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?
Which unit is used to measure the quantity of radioactivity based on the number of decays within a given time?
Approximately how many times faster is Radiophosphorus decaying compared to Sulfur-35?
Approximately how many times faster is Radiophosphorus decaying compared to Sulfur-35?
What does the text suggest about the usefulness of the gram as a unit for quantity in radioactivity?
What does the text suggest about the usefulness of the gram as a unit for quantity in radioactivity?
What is the definition of the becquerel, in terms of radioactive material?
What is the definition of the becquerel, in terms of radioactive material?
In the context of the becquerel, what does 'dps' stand for?
In the context of the becquerel, what does 'dps' stand for?
For a pure beta emitter, how many beta particles are emitted per second for 1 Bq?
For a pure beta emitter, how many beta particles are emitted per second for 1 Bq?
Which radionuclide releases 3 radiations per second for 1 Bq?
Which radionuclide releases 3 radiations per second for 1 Bq?
What is the equivalent of 1 terabecquerel in becquerels?
What is the equivalent of 1 terabecquerel in becquerels?
Why is the becquerel considered to be a measure of quantity and not the rate of transformation?
Why is the becquerel considered to be a measure of quantity and not the rate of transformation?
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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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