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Radioactive Half-Life
Choose the isotope, and the half-life will be provided for you.
(Or manually enter the half-life of an isotope not on the list.)
Then enter the original amount and elapsed time to calculate
the amount of isotope remaining.
Select the isotope:
Half-life (in days):
Enter the amount of starting material (in μCi):
Enter the time elapsed (in days):
μ
Ci
or
%.