A Sample of (Which Decays By $\beta$ -Emission) Has an Activity of 10

question 8

Multiple Choice

A sample of (which decays by $\beta$ -emission) has an activity of 10.0 mCi. After
6) 06 d it has an activity of 7.5 mCi. The half-life of ³²P is approximately

• A) 3.03 d
• B) 7.30 d
• C) 12.1 d
• D) 14.6 d
• E) 24.2 d

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