Th232 Decay Chain
Th232 Decay Chain . 16.2 (36.2%) 90.0 (1.02%) 93.4 (1.66%) 105.2 (0.575%) 108.3 (0.195%) th228. According to adams and gasparini (1970) thorium is chemically stable in the tetravalent ion state under reducing conditions, has a large ionic radii, a high coordination number (8) with respect to oxygen, and. 18193E3001Q065 Manuali Strumentazione from elearning.unimib.it Thorium is a naturally occurring soft, silvery white radioactive metal present in very low levels in water, soils, rocks, plants, and animals. Isotopes of thorium (click to see decay chain): 64 (1991) 232 th entry in kaeri nuclide chart.