After What Length of Time Does Tc-99m (Obtained from Mo-99)

question 21

Multiple Choice

After what length of time does Tc-99m (obtained from Mo-99) reach the maximum of its activity in a generator? The half-life of Tc-99m is 6.02 h, and that of Mo-99 is 66.7 h.

• A)3.96 × 10^-4 d
• B)3.96 × 10^-2 d
• C)19.1 d
• D)22.9 d

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Definitions:

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