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)

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The number of radioactive atoms (N) can be calculated using the formula: N = (Activity / Decay constant). The decay constant (λ) is related to the half-life (T₁/₂) by λ = ln(2) / T₁/₂. Given the activity in Ci, convert it to decays/s, and use the half-life to find λ. Then calculate N.

Approximately How Many Radioactive Atoms Are Present in a Tritium