lutetium
chemical element with symbol Lu and atomic number 71
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Summary
lutetium is a chemical element[1]. lutetium draws 3,719 Wikipedia views per month (chemical element category, ranking #97 of 144).[2]
Key Facts
- Discoverer or inventor: Georges Urbain[3], Carl Auer von Welsbach[4]
- Named after: Lutetia[5]
- Canonical SMILES: [Lu][6]
- Element symbol: Lu[7]
- Chemical formula: Lu[8]
- Subclass of: lanthanide[9], d-block[10]
- Part of: lanthanide[11], period 6[12], group 3[13]
- Commons category: Lutetium[14]
- Unicode character: 鎦[15]
- Crystal system: hexagonal crystal system[16]
- Time of discovery or invention: 1906[17]
- Point group: dihexagonal-dipyramidal[18]
- Space group: space group P6₃/mmc[19]
- IPA transcription: ljuːˈtiːʃiəm[20]
- Topic's main category: Category:Lutetium[21]
- Commons gallery: Lutetium[22]
- Atomic number: 71[23]
- Electronegativity: 1[24]
- Oxidation state: 3[25], 0[26], 1[27], 2[28]
- Described by source: Armenian Soviet Encyclopedia[29], Great Soviet Encyclopedia (1926–1947)[30]
- Topic has template: Template:Infobox lutetium[31]
- Has characteristic: paramagnetism[32]
- Different from: Lutetian[33]
- Density: 9786.15 kilogram per cubic metre[34]
- Electrical conductivity: 1720000.0 siemens per metre[35]
Why It Matters
lutetium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[36] lutetium is known by 68 alternative names across languages and contexts.[37]