Assertion: protactinium | /r/CapableOf | occupy important position
Facets:
value: in the periodic table
type: TEMPORAL
Source sentences:
text: The observed increases in 5f orbital participation demonstrate that protactinium occupies an important position in the Periodic Table for studying the changing influences of the 5f and 6d orbitals to the structure, bonding, and reactivity of actinide elements.