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Template:Infobox ruthenium

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Ruthenium, 44Ru
File:Ruthenium a half bar.jpg
Ruthenium
Pronunciation/ruːˈθiːniəm/ ​(roo-THEE-nee-əm)
Appearancesilvery white metallic
Standard atomic weight Ar°(Ru)
Ruthenium in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Fe
↑
Ru
↓
Os
technetium ← ruthenium → rhodium
Atomic number (Z)44
Groupgroup 8
Periodperiod 5
Block  d-block
Electron configuration[Kr] 4d7 5s1
Electrons per shell2, 8, 18, 15, 1
Physical properties
Phase at STPsolid
Melting point2607 K ​(2334 °C, ​4233 °F)
Boiling point4423 K ​(4150 °C, ​7502 °F)
Density (at 20° C)12.364 g/cm3[3]
when liquid (at m.p.)10.65 g/cm3
Heat of fusion38.59 kJ/mol
Heat of vaporization619 kJ/mol
Molar heat capacity24.06 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2588 2811 3087 3424 3845 4388
Atomic properties
Oxidation statescommon: +3, +4
−2,[4] 0,[5] +1,[4] +2,[4] +5,[4] +6,[4] +7,[4] +8[4]
ElectronegativityPauling scale: 2.2
Ionization energies
  • 1st: 710.2 kJ/mol
  • 2nd: 1620 kJ/mol
  • 3rd: 2747 kJ/mol
Atomic radiusempirical: 134 pm
Covalent radius146±7 pm
Color lines in a spectral range
Spectral lines of ruthenium
Other properties
Natural occurrenceprimordial
Crystal structure ​hexagonal close-packed (hcp) (hP2)
Lattice constantsa = 270.58 pm
c = 428.16 pm (at 20 °C)[3]
Thermal expansion6.78×10−6/K (at 20 °C)[3][lower-alpha 1]
Thermal conductivity117

αa 5.77 αc 8.80

αavr 6.78 W/(m⋅K)
Electrical resistivity71 nΩ⋅m (at 0 °C)
Magnetic orderingparamagnetic[6]
Molar magnetic susceptibility+39×10−6 cm3/mol (298 K)[6]
Young's modulus447 GPa
Shear modulus173 GPa
Bulk modulus220 GPa
Speed of sound thin rod5970 m/s (at 20 °C)
Poisson ratio0.30
Mohs hardness6.5
Brinell hardness2160 MPa
CAS Number7440-18-8
History
Namingfrom Latin Ruthenia for Russia[7][8]
Discovery and first isolationKarl Ernst Claus (1844)
Isotopes of ruthenium
Main isotopes[9] Decay
abun­dance half-life (t1/2) mode pro­duct
96Ru 5.54% stable
97Ru synth 2.9 d ε 97Tc
γ –
98Ru 1.87% stable
99Ru 12.8% stable
100Ru 12.6% stable
101Ru 17.1% stable
102Ru 31.6% stable
103Ru synth 39.26 d β− 103Rh
γ –
104Ru 18.6% stable
106Ru synth 373.59 d β− 106Rh
File:Symbol category class.svg Category: Ruthenium
| references
child table, as reused in {IB-Ru}
Main isotopes of ruthenium
Main isotopes[9] Decay
abun­dance half-life (t1/2) mode pro­duct
96Ru 5.54% stable
97Ru synth 2.9 d ε 97Tc
γ –
98Ru 1.87% stable
99Ru 12.8% stable
100Ru 12.6% stable
101Ru 17.1% stable
102Ru 31.6% stable
103Ru synth 39.26 d β− 103Rh
γ –
104Ru 18.6% stable
106Ru synth 373.59 d β− 106Rh
Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt) caption:

alt:
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
  most stable isotope
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01)
See also {{Index of data sets}} · Cat:data sets (0) · (this table:
)

Notes

  1. ↑ The thermal expansion is anisotropic: the parameters (at 20 °C) for each crystal axis are αa = 5.77×10−6/K, αc = 8.80×10−6/K, and αaverage = αV = 6.78×10−6/K.[3]

References

These references will appear in the article, but this list appears only on this page.
  1. ↑ Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  2. ↑ Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  3. ↑ Jump up to: 3.0 3.1 3.2 3.3 Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  4. ↑ Jump up to: 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  5. ↑ Ru(0) is present in the carbonyl-phosphine complex Ru(CO)2(PPh3)3, see Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  6. ↑ Jump up to: 6.0 6.1 Haynes, p. 4.130
  7. ↑ Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  8. ↑ Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).
  9. ↑ Jump up to: 9.0 9.1 Lua error in Module:Citation/CS1/Configuration at line 2088: attempt to index field '?' (a nil value).

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