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

question 182

Multiple Choice

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 10¹⁰ Bq)

• A)6 10^-4
• B)2
• C)2 10¹²
• D)6 10⁸
• E)4 10^-2

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