Assertion: argon | /r/CapableOf | form compound
Facets:
value: as of 2009
type: TEMPORAL
value: under various extreme conditions
type: TEMPORAL
Source sentences:
text: Although argon is a noble gas, it can form some compounds under various extreme conditions.
text: As of 2009, argon has been found to form only one compound, argon fluorohydride, so it is often used when an inert atmosphere is required.
text: Once thought to be completely inert, argon is known to form at least one compound.