List of radioactive nuclides by half-life
This is a list of radioactive nuclides, ordered by half-life from shortest to longest, in seconds, minutes, hours, days, and years.10−24 seconds (yoctoseconds)
10−21 seconds (zeptoseconds)
10−18 seconds (attoseconds)
10−15 seconds (femtoseconds)
10−12 seconds (picoseconds)
10−9 seconds (nanoseconds)
10−6 seconds (microseconds)
10−3 seconds (milliseconds)
100 seconds
103 seconds (kiloseconds)
106 seconds (megaseconds)
109 seconds (gigaseconds)
1012 seconds (teraseconds)
1015 seconds (petaseconds)
1018 seconds (exaseconds)
1021 seconds (zettaseconds)
1024 seconds (yottaseconds)
1027 seconds
1030 seconds
Tellurium-128's half-life is over 160 trillion times greater than the age of the universe.
