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

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Which of the following Rn-222 progeny are the principal alpha-emitters responsible for the lung dose from radon inhalation?

Pb-214 and Bi-214 Po-218 and Po-214 Pb-210 and Po-210 Ra-226 and Th-230

Correct Answer:

Po-218 and Po-214

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