Assertion: protactinium | /r/AtLocation | fulcrum
Facets:
value: on the periodic table
type: LOCATION
Source sentences:
text: Said study author and Argonne chemist Richard Wilson said, “Protactinium is at a fulcrum on the periodic table.
text: Protactinium is at a fulcrum on the periodic table," said study author and Argonne chemist Richard Wilson.