Radioactivity half life carbon dating
Knowing about half-lives is important because it enables you to determine when a sample of radioactive material is safe to handle.
For example, you can’t find the remaining amount of an isotope as 7.5 half-lives by finding the midpoint between 7 and 8 half-lives.
This decay is an example of an exponential decay, shown in the figure below.
Finally, after a series of radioactive isotopes are formed it becomes lead-206, which is stable.
Scientists look at half-life decay rates of radioactive isotopes to estimate when a particular atom might decay.
It takes a certain amount of time for half the atoms in a sample to decay.