Assertion: thorium's life | /r/HasProperty | half-life 14,000,000,000 years
Facets:
Source sentences:
text: In order of atomic weight, these are: Th228: half-life 1.9 years Th230: half-life 75,400 years Th232: half-life 14,000,000,000 years Th234: half-life 24.1 days