Assertion: berkelium's isomer | /r/HasProperty | characterized with atomic numbers
Facets:
Source sentences:
text: About twenty isotopes and six nuclear isomers (excited states of an isotope) of berkelium have been characterized with the atomic numbers ranging from 235 to 254.
text: About twenty isotopes and six nuclear isomers (excited states of an isotope) of berkelium have been characterized with the atomic numbers ranging from 235 to 254.