ruthenium
chemical element with symbol Ru and atomic number 44
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Summary
ruthenium is a chemical element[1]. ruthenium draws 5,146 Wikipedia views per month (chemical element category, ranking #78 of 144).[2]
Key Facts
- Discoverer or inventor: Karl Ernst Claus[3]
- Named after: Ruthenia[4]
- Location of discovery: Q56007908[5]
- Canonical SMILES: [Ru][6]
- Element symbol: Ru[7]
- Chemical formula: Ru[8]
- Subclass of: platinum group[9], d-block[10]
- Part of: period 5[11], group 8[12], transition metal[13]
- Commons category: Ruthenium[14]
- Unicode character: 釕[15]
- Crystal system: hexagonal crystal system[16]
- Time of discovery or invention: 1844[17]
- Point group: dihexagonal-dipyramidal[18]
- Space group: space group P6₃/mmc[19]
- IPA transcription: ruːˈθiːniəm[20]
- Topic's main category: Category:Ruthenium[21]
- Commons gallery: Ruthenium[22]
- Atomic number: 44[23]
- Mohs' hardness: 6.5[24]
- Electronegativity: 2.2[25]
- Oxidation state: 1[26], 2[27], 3[28], 4[29], 5[30], 6[31], 7[32], 8[33], -4[34], -2[35], 0[36]
- Described by source: Otto's encyclopedia[37], Granat Encyclopedic Dictionary[38], Brockhaus and Efron Encyclopedic Dictionary[39], Small Brockhaus and Efron Encyclopedic Dictionary[40], Encyclopædia Britannica 11th edition[41], Armenian Soviet Encyclopedia, vol. 10[42]
- Has characteristic: paramagnetism[43]
- Density: 12385.0 kilogram per cubic metre[44]
- Electrical conductivity: 14100000.0 siemens per metre[45]
Body
Influence
Things named for ruthenium include rutheniridosmine[46], a mineral species[47] and ruthenarsenite[48], a mineral species[49].
Why It Matters
ruthenium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[50] ruthenium is known by 64 alternative names across languages and contexts.[51]
Entities named for ruthenium include rutheniridosmine[46], a mineral species[47] and ruthenarsenite[48], a mineral species[49].