71
Lu
Lutetium
Lutetium
Lutetium (Lu)
Lanthanides · Solid · Period 6 · Group 3
Element Properties
- Atomic Number
- 71
- Symbol
- Lu
- Atomic Mass
- 174.9667
- Category
- Lanthanides
- Standard State
- Solid
- Period
- 6
- Group
- 3
- Electronegativity
- 1.27
- Atomic Radius
- 221
- Ionization Energy
- 5.43
- Electron Affinity
- —
- Oxidation States
- +3
- Melting Point
- 1936 K (1662.85 °C)
- Boiling Point
- 3675 K (3401.85 °C)
- Density
- 9.84
- Electron Configuration
- [Xe]6s2 4f14 5d1
- Year Discovered
- 1907
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Frequently asked questions
What is the atomic number of Lutetium?
The atomic number of Lutetium is 71, which equals the number of protons in its nucleus.
What is the atomic mass of Lutetium?
The atomic mass of Lutetium is approximately 174.9667 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Lutetium?
The electron configuration of Lutetium is [Xe]6s2 4f14 5d1.
Where is Lutetium in the periodic table?
Lutetium is located in period 6, group 3.
When was Lutetium discovered?
Lutetium was discovered in 1907.
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