Question

one gram of radioactive isotope becomes 0.25 gram after 5 days it's half life period is​

Answer 1

Answer:

The half life period of the given sample is 2.5 days or 2 days 12 hours.

Explanation:

Initially there was 1 gram of radioactive sample.

After 5 days it has become 0.25 grams, i.e 1/4 th of the initial sample.

Half life of reaction is defined as the time taken by a substance to decompose to half of the initial activity or number of moles or weight.

If the sample takes 5 days to decompose to 1/4, how much time would it take to decompose to 1/2 of the weight? 2.5 days.

Therefore half life period of the given sample is 2.5 days or 2 days 12 hours.