Assertion: californium's form | /r/CapableOf | exist below 900°c
Facets:
value: with a density of 8.74 g
type: OTHER
Source sentences:
text: The element has two crystalline forms: a double-hexagonal close-packed α form that exists below 900°C with a density of 15.10 g/cc and a face-centered cubic β form with a density of 8.74 g/cc.
text: The α form exists below 900 °C (1,650 °F) with a density of 15.10 g/cm3 and the β form exists above 900 °C with a density of 8.74 g/cm3.