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Appendix M
Half-Lives for Several Radioactive Isotopes
Isotope
Half-Life
Type of Emission
Isotope
Half-Life
Type of Emission
6.243 d
27 d
1.59 105 y
162.8 d
2.45 105 y
4.5 h
7.03 108 y
20.47 d
4.47 109 y
3.24 h
23.54 m
20.1 h
2.3 d
76 m
2.407 104 y
55 s
6.54 103 y
0.65 s
14.4 y
1.5 s
432.2 y
0.8 s
Table M1
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