The half life of a radioactive material is 12.7 hr. What fraction of the original active material would become inactive in 63.5 hr.

The half-life of a radioactive nucleus is 20 hours. What fraction of original activity will remain after 40 hours?

The half-life of a radioactive nucleus is 20 hours. What fraction of original activity will remain after 40 hours?

The half-life of a radioactive nuclide is 20 hours. What fraction of original activity will remain after 40 hours?

The half life of a radioactive material is 20 days . It it is heated to 1000 k, then its half life will become .

Half life of a radioactive material is 3600 years. Calculate the average life

The half life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be:

The half life period of a radioactive element is 4 s . What fraction of 100 g sample of this radioactive material will remain after 16 s ?

The half-life period of a radioactive material is 5 hours. In how much time 15/16 of the material will decay?