You have a radioisotope with a half-life of 5 days.How many days will it take before the radioisotope is completely gone?

Question

Quizplus · Accepted Answer

A radioisotope will never completely disappear, as there will always be a small amount of it left after each half-life. However, after several half-lives (in this case, after 10 half-lives or 50 days), the amount of radioisotope remaining would be so small that it would be considered effectively gone for practical purposes.

You Have a Radioisotope with a Half-Life of 5 Days