65
Tb
Terbium
Terbium
Terbium (Tb)
Lanthanides · Solid · Period 6 · Group 3
Element Properties
- Atomic Number
- 65
- Symbol
- Tb
- Atomic Mass
- 158.9254
- Category
- Lanthanides
- Standard State
- Solid
- Period
- 6
- Group
- 3
- Electronegativity
- —
- Atomic Radius
- 221
- Ionization Energy
- 5.86
- Electron Affinity
- —
- Oxidation States
- +3
- Melting Point
- 1629 K (1355.85 °C)
- Boiling Point
- 3503 K (3229.85 °C)
- Density
- 8.23
- Electron Configuration
- [Xe]6s2 4f9
- Year Discovered
- 1843
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Frequently asked questions
What is the atomic number of Terbium?
The atomic number of Terbium is 65, which equals the number of protons in its nucleus.
What is the atomic mass of Terbium?
The atomic mass of Terbium is approximately 158.9254 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Terbium?
The electron configuration of Terbium is [Xe]6s2 4f9.
Where is Terbium in the periodic table?
Terbium is located in period 6, group 3.
When was Terbium discovered?
Terbium was discovered in 1843.
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