Assertion: berkelium's isomer | /r/HasProperty | excited states of an isotope
Facets:
Source sentences:
text: About twenty isotopes and six nuclear isomers (excited states of an isotope) of berkelium have been characterized with the mass numbers ranging from 233 to 253 (except 235, 237, and 239).
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 mass 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.