Question

The isotope 208Tl undergoes β decay with a half-life of 3.1 min.
(a) What isotope is produced by the decay?
(b) How long will it take for 99.0% of a sample of pure 208Tl to decay?
(c) What percentage of a sample of pure 208Tl remains un-decayed after 1.0 h?

Answer 1

Answer:

a. Pb 208

b. About 21.7 minutes

c. only a trace amount

Explanation:

It under goes beta decay.

There should be virtually nothing after an hour