97
Bk
Berkelium
(247)
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#97
Berkelium
actinide· Solid·247 u
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.
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Identity
- Symbol
- Bk
- Atomic Number
- 97
- Atomic Mass
- 247 u
- Category
- actinide
- Block
- f-block
- Period
- 7
- Group
- 3
- Appearance
- silvery
- Year Discovered
- 1949 CE
- Discovered By
- Lawrence Berkeley National Laboratory
- Named By
- Berkeley
Electrons
- Configuration
- [Rn] 5f9 7s2
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f9
- Shells
- 2, 8, 18, 32, 27, 8, 2
- Electronegativity
- 1.3
- Electron Affinity
- -165.24
- Oxidation States
- +4, +3
- Ionization Energies
- 601
Physical Properties
- State at
- Solid
- Melting Point
- 1259
- Boiling Point
- 2900
- Density
- 14.78
- Crystal Structure
- HEX
- Magnetic Ordering
- Paramagnetic
Mechanical
Thermal & Electrical
- Specific Heat
- 120 J/(kg K) J/(g·K)
- Heat of Vaporization
- 310 kJ/mol kJ/mol
- Heat of Fusion
- 10 kJ/mol kJ/mol
Abundance
- Universe
- 0
- Sun
- 0
- Meteorite
- 0
- Earth's Crust
- 0
- Ocean
- 0
- Human Body
- 0