Assertion: actinium | /r/HasProperty | a solid
Facets:
value: pretty
type: DEGREE
value: in its elemental form
type: OTHER
Source sentences:
text: It has a standard atomic weight of 227 g•mol −1 and it is a solid in its elemental form.
text: Actinium is a solid metal, radioactive with the atomic number 89.
text: Therefore, actinium is a pretty solid compound.