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Berkelium

Chemical element
Berkelium is a synthetic chemical element; it has symbol Bk and atomic number 97. It is a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the Lawrence Berkeley National... Wikipedia
Symbol: Bk
Atomic number: 97
Atomic mass: 247 u
Discovered: 1949
Melting point: 1,805°F (984.8°C)
Electron configuration: Rn 5f9 7s2