Thorium-228 (228Th)
Properties: Thorium-228 (once called radiothorium due to its occurrence in the disintegration chain of Thorium-232) is an alpha emitter with a half-life of 1.91 years… Read More »Thorium-228 (228Th)
Thorium-227 (227Th)
Properties: Thorium-227 (once called Radioactinium) is an alpha emitter with a half-life of 18.7 days that decays into 223Ra (half-life 11.4 d; α, 76% at… Read More »Thorium-227 (227Th)
Radium-224 (224Ra)
Since 2006, there are no drugs labeled with Radium-224 on the market anymore. Properties: 224Ra has a half-life of 3.66 d and decays with an… Read More »Radium-224 (224Ra)
Radium-223 (223Ra)
Radium-223 is a radioactive isotope of the element radium with a half-life of about 11.4 days. It is used in nuclear medicine for the treatment… Read More »Radium-223 (223Ra)
Bismuth-213 (213Bi)
Properties: Bismuth-213 (213Bi) is an alpha emitter with a short half-life of 45.6 min.◼ 213Bi decays into Thallium-209 (209Tl, 2%) and Polonium-213 (213Po, 98%) with… Read More »Bismuth-213 (213Bi)
Bismuth-212 (212Bi)
Properties: Bismuth-212 (212Bi) is an alpha emitter with a short half-life of 60.6 min.◼ 212Bi decays into 64% 212Po (β–emission, 2,254 keV, 55%) and 36%… Read More »Bismuth-212 (212Bi)
Astatine-211 (211At)
211At is an alpha emitter with a half-life of 7.2 h. Astatine-211 simultaneously transforms by two routes; 58% by electron capture to 211Po and by… Read More »Astatine-211 (211At)
Actinium-225 (225Ac)
225Ac is trivalent radiometal and transform by α-emission. 225Ac transforms with a half-life of 10 days through successive α-emissions, thus releasing 4 α-particles of individual… Read More »Actinium-225 (225Ac)