Question

12)
For a radioactive substance, write the relation between:
(i) Half lift (T) and disintegration constant
(ii) Mean life and disintegration constant ​

Answer 1

Answer:

Half life of a radioactive substance(τ

1/2) measures the time it takes for a given amount of the substance to become reduced by half as a consequence of decay, and therefore, the emission of radiation.

It is related to radioactive decay constant k as τ

1/2= ln2/k

.

Also its relation with mean life λ m = 1/k

=>τ 1/2 =λ mln2