Question

The time it takes for 50 percent of the nuclei in a radioactive sample to decay to its stable isotope is called _____.

Answer 1

This is called the half-life of the radioactive isotope.

Answer 2

Answer : The time it takes for 50 percent of the nuclei in a radioactive sample to decay to its stable isotope is called Half-life.

Explanation :

Half-life of radioactive isotope decay : It is defined as the rate at which a decay is measured in half-life. Or we can say that the time it takes for (1/2) half of the nuclei in a radioactive sample to decay to its stable isotope.

The radioactive isotope decay shows first order reaction. The formulas used for first order reaction is,

`t_(1/2)=(0.693)/(\lambda)`

where,

`t_(1/2)` = radioactive half-life

`\lambda` = radioactive decay constant

Hence, the correct answer is, Half-life.