Lu
Lutetium Symbol (Lu)
Lutetium is element 71 of the periodic table. Copy its symbol Lu and see its atomic weight, electron configuration and physical properties.
What does Lu mean?
Lu is the chemical symbol for lutetium, element number 71 in the periodic table. Lutetium is a lanthanide in group 3, period 6. It is a solid at room temperature and was discovered in 1907.
Codes and properties
| Chemical symbol | Lu |
|---|---|
| Atomic number (Z) | 71 |
| Atomic weight (PubChem) | 174.9667 |
| Group / period | 3 / 6 |
| Element category | lanthanide |
| Electron configuration | [Xe]6s² 4f¹⁴ 5d¹ |
| State at 20 °C | Solid |
| Oxidation states | +3 |
| Electronegativity (Pauling) | 1.27 |
| Melting point | 1936 K (1662.85 °C) |
| Boiling point | 3675 K (3401.85 °C) |
| Density | 9.84 g/cm³ |
| Discovered | 1907 |
How to type Lu
- Plain text: type
Lu— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as H₂O — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Lu}in math mode, or use the mhchem package:\ce{Lu}. - HTML:
Lu; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for lutetium?
The chemical symbol for lutetium is Lu.
What is the atomic number of lutetium?
Lutetium has atomic number 71, meaning each atom has 71 protons.
What is the electron configuration of lutetium?
The ground-state electron configuration of lutetium is [Xe]6s² 4f¹⁴ 5d¹.
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Reference: Lutetium on PubChem (NIH)