Assertion: transactinide series | /r/CapableOf | comprise element
Facets:
value: from 104
type: TEMPORAL
Source sentences:
text: Seaborg's subsequent elaborations of the actinide concept theorized a series of superheavy elements in a transactinide series comprising elements from 104 to 121 and a superactinide series of elements from 122 to 153.