97 Bk 247
Berkelium
actinide
Properties
- Atomic number
- 97
- Atomic mass
- 247 u
- Category
- actinide
- Group
- f-block
- Period
- 7
- Block
- f-block
- State (room temp)
- Solid
- Outer-shell electrons
- 2
- Electronegativity
- 1.3 (Pauling)
- Density
- 14.78 g/cm³
- Melting point
- 985.85 °C
- Boiling point
- 2626.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f⁹
Noble-gas shorthand: [Rn] 5f⁹ 7s²
Electrons per shell: 2, 8, 18, 32, 27, 8, 2 — that's 2 in the outermost shell.
About Berkelium
Berkelium is a transuranic radioactive chemical element with 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 University of California Radiation Laboratory where it was discovered in December 1949.
- Discovered by Lawrence Berkeley National Laboratory
- Appearance: silvery
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.