Common Activity Levels of Radon-222 Are in the Range of 1

question 50

Multiple Choice

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

• A)6  10 ^{ 4}
• B)6  10⁸
• C)2  10¹²
• D)2
• E)4  10 ^{ 2}

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