97
Bk
Berkelium
Berkelium
Berkelium (Bk)
Actinides · Solid · Period 7 · Group 3
Element Properties
- Atomic Number
- 97
- Symbol
- Bk
- Atomic Mass
- 247.0703
- Category
- Actinides
- Standard State
- Solid
- Period
- 7
- Group
- 3
- Electronegativity
- 1.3
- Atomic Radius
- 244
- Ionization Energy
- 6.23
- Electron Affinity
- —
- Oxidation States
- +4, +3
- Melting Point
- 1323 K (1049.85 °C)
- Boiling Point
- —
- Density
- 14
- Electron Configuration
- [Rn]7s2 5f9
- Year Discovered
- 1949
Electron shells
[Rn]7s2 5f9
Electrons are arranged in shells (principal energy levels) around the nucleus. The diagram is a schematic — orbitals in the same shell are not drawn separately.
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Frequently asked questions
What is the atomic number of Berkelium?
The atomic number of Berkelium is 97, which equals the number of protons in its nucleus.
What is the atomic mass of Berkelium?
The atomic mass of Berkelium is approximately 247.0703 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Berkelium?
The electron configuration of Berkelium is [Rn]7s2 5f9.
Where is Berkelium in the periodic table?
Berkelium is located in period 7, group 3.
When was Berkelium discovered?
Berkelium was discovered in 1949.
Related elements
Same group
21
Sc
Scandium
44.956
39
Y
Yttrium
88.906
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.24