Test_Prep
ASVAB · Question #429
The half-life of iodine-131 is 8 days. Approximately how long would it take for 1 milligram of 1-131 to decay to 1/2 milligram of 1-131?
The correct answer is D. 1 month. See the full explanation below for the reasoning.
Question
The half-life of iodine-131 is 8 days. Approximately how long would it take for 1 milligram of 1-131 to decay to 1/2 milligram of 1-131?
Options
- A4 days
- B8 days
- C2 weeks
- D1 month
How the community answered
(27 responses)- A7% (2)
- B19% (5)
- C4% (1)
- D70% (19)
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