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, which is 2 in the outermost shell.
Related: electron configuration, the Bohr model, valence electrons.
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
Berkelium: frequently asked questions
- What is Berkelium?
- Berkelium (Bk) is the chemical element with atomic number 97. It is a metal: specifically an actinide.
- What is the atomic number of Berkelium?
- Berkelium's atomic number is 97, which means every Berkelium atom has 97 protons in its nucleus.
- What is the electron configuration of Berkelium?
- The electron configuration of Berkelium is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f9 (noble-gas shorthand: [Rn] 5f9 7s2). Its electrons are arranged in shells of 2, 8, 18, 32, 27, 8, 2, with 2 in the outermost shell.
- Is Berkelium a metal or a nonmetal?
- Berkelium is a metal: specifically an actinide.
- What group and period is Berkelium in?
- Berkelium sits in the f-block (the actinide row) of period 7 on the periodic table.
- Is Berkelium a solid, liquid, or gas?
- At room temperature, Berkelium is a solid.
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.