InterNACHI Certified Radon Tester Practice Questions - InterNACHI Certified Radon Tester (Radon Measurement Professional) Exam

In the Rn-222 decay chain, what is the approximate half-life of Polonium-218 (Po-218)?

3.1 minutes 27 minutes 20 minutes 164 microseconds

Correct Answer:

3.1 minutes

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