Assertion: fluorine's compound | /r/HasProperty | krypton
Facets:
value: difluoride,
type: OTHER
Source sentences:
text: In the early 1960s, however, krypton was found to react with the element fluorine when both are combined in an electrical-discharge tube at −183 °C (−297 °F); the compound formed is krypton difluoride, KrF 2 .