The Initial Decay Rate of a Nuclide Is 1

question 53

Multiple Choice

The initial decay rate of a nuclide is 1.77 × 10¹²/m. After 7.63 d, the decay rate is 1.82 × 10¹¹/m. What is the half-life of the isotope?

• A) 139 d
• B) 0.298 d
• C) 0.207 d
• D) 2.32 d
• E) 2.50 d

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Definitions:

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