Common activity levels of radon-222 in the atmosphere are in the range of 1 picocurie/liter pCi/L).How many atoms of radon decay each minute in a 1 L sample of air with radiation at this level? (1 Bq = 1 decay/s and 1 Ci = 3.7 * 10¹⁰Bq)

Question

Quizplus · Accepted Answer

1 picocurie (pCi) is equal to 0.037 decays per second. Therefore, in one minute (60 seconds), 1 pCi/L corresponds to 0.037 * 60 = 2.22 decays, which rounds to 2 decays per minute.

Common Activity Levels of Radon-222 in the Atmosphere Are in the Range