Assertion: thorium's life | /r/HasProperty | 14 billion years
Facets:
Source sentences:
text: The half-life of Th-232, which comprises most of thorium ore, is 14 billion years, so it is not hazardous due to its extremely slow decay.
text: Its half life is about 14 billion years.
text: After one half life (14 billion years), only 5 grams of a ten-gram sample of thorium-232 would be left.
text: Thorium metal by far is the most stable and frequent actinoid, the half-life of 232Th is 14 billion years.