Question

half life of a radioactive nuclide is 4 days what will be the probability that a nucleus decay into two half life.

Answer 1

Answer:

After two half-lives 1/4th fraction of nuclei will remain un-decayed. Or, 3/4th fraction will decay. Hence, the probability that a nucleus decays in two half-lives is 3/4.

Explanation:

Answer 2

The probability that a nucleus decay into two half life is 3/4.

Explanation:

The nucleus remains undecayes after 1 half life

= 1/2

The nucleus remains undecayes after 2 half life

= 1/4

So, the nucleus decay into two half life

$=1-\frac{1}{4}$

$=\frac{3}{4}$

Thus, the probability that a nucleus decay into two half life is 3/4.

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