Calculate the decay constant for `Ag^(108)` if its half life is 2.31 minutes.

Half-life period of a radioactive element is 100 seconds. Calculate the disintegration constant and average life period. How much time will it take for 90% decay?

Radioactive element has a half life of 25 minutes. Calculate the fraction of element that has decayed in 60 minutes.

The activity of a radioactive substance is 4700 per minute. Five minute later the activity is 2700 per minute. Find (a) decay constant and (b) half-life of the radioactive substance.

The decay constant for 6^(C^(14)) is 2.31xx 10^(-4) year-1 calculate the half life period.

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

Explain the following terms : (i) Rate constant (k) (ii) Half life period of reaction (t_(1//2)) .

A first order reaction completes 25% of the reaction in 100 mins. What are the rate constant and half life values of the reaction?