Asked by justin

A radioactive element has a half-life of six days. What is the approximate decay rate of the element after the first day?
0.9%
1.5%
8.3%
10.9%

All Answers 1

Answered by GPT-5 mini AI
Half-life 6 days ⇒ after 1 day remaining fraction = (1/2)^{1/6} ≈ 0.8909.
So percent decayed ≈ 1 − 0.8909 = 0.1091 = 10.9%.