This is a list of radioactive nuclides, ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10−19 and 10−10 seconds.
10−24 seconds (yoctoseconds)
Twenty-three yoctoseconds is the time needed to traverse a 7-
femtometre distance at the
speed of light—around the diameter of a large
atomic nucleus. ==10−21 seconds (zeptoseconds)==
10−21 seconds (zeptoseconds)
==10−18 seconds (attoseconds)==
10−18 seconds (attoseconds)
==10−12 seconds (picoseconds)==
10−12 seconds (picoseconds)
==10−9 seconds (nanoseconds)==
10−9 seconds (nanoseconds)
==10−6 seconds (microseconds)==
10−6 seconds (microseconds)
==10−3 seconds (milliseconds)==
109 seconds (gigaseconds)
==1012 seconds (teraseconds)==
1012 seconds (teraseconds)
==1015 seconds (petaseconds)==
1018 seconds (exaseconds)
==1021 seconds (zettaseconds)==
1021 seconds (zettaseconds)
==1024 seconds (yottaseconds)==
1024 seconds (yottaseconds)
==1027 seconds (ronnaseconds)==
1027 seconds (ronnaseconds)
==1030 seconds (quettaseconds)==
1030 seconds (quettaseconds)
The half-life of tellurium-128 is over 160
trillion times greater than the
age of the universe, which is seconds. ==See also==