Appendix G Half-Lives
This was originally from the 1st Canadian Edition of College Chemistry which is also based on Open Stax College Chemistry
Please note that y = years, d = days, h = hours, m = minutes and s = seconds, E.C. = electron capture, S.F. = spontaneous fission
Half-Lives for Several Radioactive Isotopes | |||||
---|---|---|---|---|---|
Isotope | Half-Life | Type of Emission | Isotope | Half-Life | Type of Emission |
5730 y | β- | 5.01 d | β- | ||
9.97 m | β+ | 60.55 m | α or β- | ||
4.1 × 10−22 s | 138.4 d | ||||
15.00 h | β- | 3 × 10−7 s | α | ||
14.29 d | β- | 0.15 s | α | ||
1.27 × 109 y | 3.05 m | α | |||
0.08 s | 1.0 × 10−4 s | α | |||
2.6 × 106 y | β- | 1.6 s | α | ||
5.27 y | β- | 55.6 s | α | ||
4.7 × 1010 y | β- | 3.82 d | α | ||
29 y | β- | 3.66 d | α | ||
5.1 × 1015 y | β- | 1600 y | α | ||
8.040 d | β- | 5.75 y | β- | ||
5 × 1015 y | α | 6.13 h | β- | ||
3.07 m | β- | 1.913 y | α | ||
22.3 y | β- | 1.4 × 1010 y | |||
10.6 h | β- | 22 m | β- | ||
26.8 m | β- | 24.10 d24.10 d | β- | ||
6.243 d | 27 d | β- | |||
1.59 × 105 y | 162.8 d | ||||
2.45 × 105 y | 4.5 h | ||||
7.03 × 108 y | α | 20.47 d | |||
4.47 × 109 y | α | 3.24 h | |||
23.54 m | β- | 20.1 h | α | ||
2.3 d | β- | 76 m | |||
2.407 × 104 y | α | 55 s | α | ||
6.54 × 103 y | α | 0.65 s | α | ||
14.4 y | 1.5 s | ||||
432.2 y | 0.8 s |