bn:00065961n
Noun Concept
Categories: Lists of isotopes by element, Isotopes of thorium, Thorium
EN
thorium-228  radiothorium
Definitions
Relations
Sources
EN
The radioactive isotope thorium-228. Wiktionary
A radioactive isotope of thorium, 22890Th, having a half-life of 1.4 x 1010 years; it occurs naturally, and is a source of nuclear energy. Wiktionary
IS A
WordNet 3.0 & Open English WordNet
Wiktionary
Wikipedia Redirections