The rate constant for the decay of a radioactive element is 4.72 × 10^-3/day. What is the half-life of this element? A) 2.36 × 10^-3 days B) 2.12 × 10² days C) 1.47 × 10² days D) 1.06 × 10² days E) 2.19 × 10² days

Question

Quizplus · Accepted Answer

The half-life (t₁/₂) is calculated using the formula t₁/₂ = 0.693 / k, where k is the rate constant. Substituting the given rate constant, t₁/₂ = 0.693 / (4.72 × 10⁻³) = 1.47 × 10² days.

The Rate Constant for the Decay of a Radioactive Element