- Half life is the time taken for radioisotope to decay to half of its original quantity.
- Different radioisotope have different value of half life.
The half life formula is an exponential equation:
where Nt is the remaining substance after time t, N0 is the initial amount of the substance, t1/2 is the half life of the substance, and t is the elapsed time.
Click on the diagram below to play!
Radioisotope will continue to decay to form new atom until it becomes stable
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