Assertion: berkelium's form | /r/CapableOf | exist above 600–800 °c
Facets:
value: with a density of 8.74 g
type: OTHER
Source sentences:
text: The α form exists below 600–800 °C with a density of 15.10 g/cm3 and the β form exists above 600–800 °C with a density of 8.74 g/cm3.