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Ruthenium
44Ru
Fe ↑ Ru ↓ Os Periodic table technetium ← ruthenium → rhodium
Panagway
silvery white metallic
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	ruthenium, Ru, 44
Paglitok	/ruːˈθiːniəm/ [[Help:Pronunciation respelling key|roo-Plantilya:Smallcaps all-nee-əm]]
Kategoriyang elemento	puthaw nga transisyon
Group, period, block	8, 5, d
Gibug-aton sa atomo	101.07
Kontorno sa elektron	[Kr] 4d7 5s1 2, 8, 18, 15, 1
History
Pagkadiskobre	Jędrzej Śniadecki (1807)
First isolation	Jędrzej Śniadecki (1807)
Recognized as a distinct element by	Karl Ernst Claus (1844)
Physical properties
Density (near r.t.)	12.45 g·cm−3
Liquid density at m.p.	10.65 g·cm−3
Melting point	2607 K, 2334 °C, 4233 °F
Boiling point	4423 K, 4150 °C, 7502 °F
Heat of fusion	38.59 kJ·mol−1
Heat of vaporization	591.6 kJ·mol−1
Molar heat capacity	24.06 J·mol−1·K−1
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 states	8, 7, 6, 4, 3, 2, 1,[1] -2 (mildly acidic oxide)
Electronegativity	2.2 (Pauling scale)
Ionization energies	1st: 710.2 kJ·mol−1
	2nd: 1620 kJ·mol−1
	3rd: 2747 kJ·mol−1
Atomic radius	134 pm
Covalent radius	146±7 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic[2]
Electrical resistivity	(0 °C) 71 nΩ·m
Thermal conductivity	117 W·m−1·K−1
Thermal expansion	(25 °C) 6.4 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 5970 m·s−1
Young's modulus	447 GPa
Shear modulus	173 GPa
Bulk modulus	220 GPa
Poisson ratio	0.30
Mohs hardness	6.5
Brinell hardness	2160 MPa
CAS registry number	7440-18-8
Most stable isotopes
Main article: Isotopes of ruthenium
iso NA half-life DM DE (MeV) DP 96Ru 5.52% >6.7×1016 y β+β+ 2.7188 96Mo 97Ru syn 2.9 d ε - 97Tc γ 0.215, 0.324 - 98Ru 1.88% 98Ru is stable with 54 neutrons 99Ru 12.7% 99Ru is stable with 55 neutrons 100Ru 12.6% 100Ru is stable with 56 neutrons 101Ru 17.0% 101Ru is stable with 57 neutrons 102Ru 31.6% 102Ru is stable with 58 neutrons 103Ru syn 39.26 d β− 0.226 103Rh γ 0.497 - 104Ru 18.7% 104Ru is stable with 60 neutrons 106Ru syn 373.59 d β− 3.54 106Rh
· r

Ang rutenyo (Iningles ruthenium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Ru ug kaiphan nga atomik 44. Ang rutenyo mao ang puthaw nga transisyon.

1. ↑ "Ruthenium: ruthenium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.
2. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.