# Appendix E: Half-lives for Several Radioactive Isotopes (Originally from OpenStax Chemistry)

Isotope Half-Life[1] Type of Emission[2] Isotope Half-Life[3] Type of Emission[4]
$_6^{14}\text{C}$ 5730 y $({\beta}-)$ $_{83}^{210}\text{Bi}$ 5.01 d $({\beta}-)$
$_7^{13}\text{N}$ 9.97 m $({\beta}+)$ $_{83}^{212}\text{Bi}$ 60.55 m $({\alpha}\;\text{or}\;{\beta}-)$
$_9^{15}\text{F}$ 4.1 × 10−22 s $(p)$ $_{84}^{210}\text{Po}$ 138.4 d $({\alpha})$
$_{11}^{24}\text{Na}$ 15.00 h $({\beta}-)$ $_{84}^{212}\text{Po}$ 3 × 10−7 s $({\alpha})$

1. y = years, d = days, h = hours, m = minutes, s = seconds
2. E.C. = electron capture, S.F. = Spontaneous fission
3. y = years, d = days, h = hours, m = minutes, s = seconds
4. E.C. = electron capture, S.F. = Spontaneous fission