Assertion: plutonium | /r/HasAspect | specific gravity of 19.84
Facets:
value: at 25°c
type: LOCATION
Source sentences:
text: Plutonium has a specific gravity of 19.84 (a modification) at 25°C, melting point of 641°C, boiling point of 3232°C, with a valence of 3, 4, 5, or 6.