మూస:లుటీషియం మూలకము

Lutetium, 00Lu
Lutetium
Pronunciation/ljˈtʃiəm/ (lew-TEE-shee-əm)
Appearancesilvery white
Standard atomic weight Ar°(Lu)
Lutetium 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 Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Y

Lu

Lr
ytterbiumlutetiumhafnium
Groupమూస:Infobox element/symbol-to-group/format
Periodperiod 6
Block  d-block
Electron configuration[Xe] 4f14 5d1 6s2
Electrons per shell2, 8, 18, 32, 9, 2
Physical properties
Phase at STPsolid
Melting point1925 K ​(1652 °C, ​3006 °F)
Boiling point3675 K ​(3402 °C, ​6156 °F)
Density (near r.t.)9.841 g/cm3
when liquid (at m.p.)9.3 g/cm3
Heat of fusionca. 22 kJ/mol
Heat of vaporization414 kJ/mol
Molar heat capacity26.86 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1906 2103 2346 (2653) (3072) (3663)
Atomic properties
Oxidation states0,[3] +1, +2, +3 (a weakly basic oxide)
ElectronegativityPauling scale: 1.27
Ionization energies
  • 1st: 523.5 kJ/mol
  • 2nd: 1340 kJ/mol
  • 3rd: 2022.3 kJ/mol
Atomic radiusempirical: 174 pm
Covalent radius187±8 pm
Color lines in a spectral range
Spectral lines of lutetium
Other properties
Natural occurrenceprimordial
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed crystal structure for lutetium
Thermal expansionpoly: 9.9 µm/(m⋅K) (at r.t.)
Thermal conductivity16.4 W/(m⋅K)
Electrical resistivitypoly: 582 nΩ⋅m (at r.t.)
Magnetic orderingparamagnetic[4]
Young's modulus68.6 GPa
Shear modulus27.2 GPa
Bulk modulus47.6 GPa
Poisson ratio0.261
Vickers hardness1160 MPa
Brinell hardness893 MPa
CAS Number7439-94-3
History
Namingafter Lutetia, Latin for: Paris, in the Roman era
DiscoveryGeorges Urbain and Carl Auer von Welsbach (1906)
First isolationCarl Auer von Welsbach (1906)
Isotopes of lutetium
Template:infobox lutetium isotopes does not exist
 Category: Lutetium
| references

References

  1. "Standard Atomic Weights: Lutetium". CIAAW. 2007.
  2. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
  3. Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017. and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry. 688 (1–2): 49–55. doi:10.1016/j.jorganchem.2003.08.028.
  4. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics (PDF). CRC press. 2000. ISBN 0849304814.