Berkelium
Atomic symbol: Bk
Atomic number: 97
Atomic mass: 247
Appearance: Silver solid at 25°C
Group: N/a
Period: 7
Series: Actinides
Block: f
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁶ 5f⁹ 7s²
Highly radioactive.
Berkelium has no known uses besides scientific interest.
Fun Fact! Above berkelium in the periodic table is the element terbium, named after the village of Ytterby in Sweden where it was discovered. In keeping, berkelium is named after the city where it was first synthetically produced: Berkeley in California, USA.