Assertion: astatine's rarity | /r/HasProperty | extreme
Facets:
Source sentences:
text: But because of its extreme rarity, it is very unlikely the general public will ever be exposed.
text: Because of its extreme rarity, it is not likely that the general public will be exposed.
text: Researchers at the Brookhaven National Laboratory have performed experiments that have identified and measured elementary reactions that involve Astatine; however, chemical research into Astatine is limited by its extreme rarity, which is a result of its extremely short half-life.