Assertion: protactinium's compound | /r/HasProperty | formed
Facets:
value: by reacting np(vii
type: MANNER
Source sentences:
text: This toxic compound is formed when powdered osmium is exposed to air.
text: The oxide compounds KNpO 4 , CsNpO 4 , and RbNpO 4 are formed by reacting Np(VII)