Question

Complete the table shown to the right for the half-life of a certain radioactive substance. Half-Life

3429 years
k=
(Round to six decimal places as needed.)
Decay Rate, k

Answer 1

0.0002019

Explanation:

Decay rate (λ) = 0.693 / Half-life (T1/2)

λ = 0.693 / 3429 years = 0.0002019 years^-1

0.693 = decay radioactive constant = natural logarithm of 2 = ln(2) = radioactive material remaining for one half-life

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