Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.6 × 10−⁶ Ci and a half-life of 12.3 years? (1 Ci = 3.7 × 10¹⁰ decays/s) A) 4 × 10¹⁰ B) 2 × 10⁸ C) 7 × 10⁸ D) 1 × 10¹³

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Quizplus · Accepted Answer

The number of radioactive atoms (N) can be calculated using the formula N = (Activity × Half-life) / (0.693 × Decay constant). Given the activity and half-life, the calculation results in approximately 1 × 10^13 atoms.

Approximately How Many Radioactive Atoms Are Present in a Tritium