e/Isotopes of berkelium

Information
has gloss	eng: Berkelium (Bk) has no stable isotopes. A standard atomic mass cannot be given.
lexicalization	eng: Isotopes of berkelium
subclass of	(noun) one of two or more atoms with the same atomic number but with different numbers of neutrons isotope
has instance	e/Berkelium-235
has instance	e/Berkelium-236
has instance	e/Berkelium-237
has instance	e/Berkelium-238
has instance	e/Berkelium-239
has instance	e/Berkelium-240
has instance	e/Berkelium-241
has instance	e/Berkelium-242
has instance	e/Berkelium-243
has instance	e/Berkelium-244
has instance	e/Berkelium-245
has instance	e/Berkelium-246
has instance	e/Berkelium-247
has instance	e/Berkelium-248
has instance	e/Berkelium-249
has instance	e/Berkelium-250
has instance	e/Berkelium-251
has instance	e/Berkelium-252
has instance	e/Berkelium-253
has instance	e/Berkelium-254

Meaning
Japanese
has gloss	jpn: バークリウム(Bk)は安定同位体を持たない。そのため標準原子量を定めることはできない。
lexicalization	jpn: バークリウムの同位体
Chinese
has gloss	zho: 锫的同位素
lexicalization	zho: 锫的同位素