The half life of 2g sample of radioactive nuclide 'X' is 15 min. The half life time of 1g sample of X is

The half life of a radioactive element is 5 min. The fraction of the sample of this isotope that will remain after 30 min is

Half life of a radioactive sample depends upon

Mean life of a radioactive sample is 100s . Then ,its half-life (in min) is

Mean life of a radioactive sample is 100s . Then ,its half-life (in min) is

If 2.0 g of a radioactive substance has t_(1//2) of 7 days , the half life of 1 g sample is

Mean life of a radioactive sample is 100 seconds Then its half-life (in minutes) is

The half life of a given radioactive nuclide is 138.6 days. What is the mean life of this nuclide? After how much time will a given sample of this nuclide get reduced to only 12.5% of its initial value?