Assertion: superactinide series | /r/CapableOf | span element
Facets:
value: approximately
type: DEGREE
value: to 153
type: OTHER
Source sentences:
text: Chemistry Nobel Prize winner Glenn T. Seaborg, who first proposed the actinide concept which led to the acceptance of the actinide series, also proposed the existence of a transactinide series ranging from element 104 to 121 and a superactinide series approximately spanning elements 122 to 153.
text: He also proposed a transactinide series ranging from element 104 to 121 and the superactinide series approximately spanning elements 122 to 153 (although more recent work suggests the end of the superactinide series to occur at element 157 instead).