Template:Infobox erbium

Erbium, 68Er
Erbium
Pronunciation/ˈɜːrbiəm/ (UR-bee-əm)
Appearancesilvery white
Standard atomic weight Ar°(Er)
167.259(3)[1]
Erbium in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
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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
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Er

Fm
holmiumerbiumthulium
Atomic number (Z)68
Groupf-block groups (no number)
Periodperiod 6
Block  f-block
Electron configuration[Xe] 4f12 6s2
Electrons per shell2, 8, 18, 30, 8, 2
Physical properties
Phase at STPsolid
Melting point1802 K ​(1529 °C, ​2784 °F)
Boiling point3141 K ​(2868 °C, ​5194 °F)
Density (near r.t.)9.066 g/cm3
when liquid (at m.p.)8.86 g/cm3
Heat of fusion19.90 kJ/mol
Heat of vaporization280 kJ/mol
Molar heat capacity28.12 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1504 1663 (1885) (2163) (2552) (3132)
Atomic properties
Oxidation states0,[2] +1, +2, +3 (a basic oxide)
ElectronegativityPauling scale: 1.24
Ionization energies
  • 1st: 589.3 kJ/mol
  • 2nd: 1150 kJ/mol
  • 3rd: 2194 kJ/mol
Atomic radiusempirical: 176 pm
Covalent radius189±6 pm
Color lines in a spectral range
Spectral lines of erbium
Other properties
Natural occurrenceprimordial
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed crystal structure for erbium
Speed of sound thin rod2830 m/s (at 20 °C)
Thermal expansionpoly: 12.2 µm/(m⋅K) (r.t.)
Thermal conductivity14.5 W/(m⋅K)
Electrical resistivitypoly: 0.860 µΩ⋅m (r.t.)
Magnetic orderingparamagnetic at 300 K
Molar magnetic susceptibility+44300.00×10−6 cm3/mol[3]
Young's modulus69.9 GPa
Shear modulus28.3 GPa
Bulk modulus44.4 GPa
Poisson ratio0.237
Vickers hardness430–700 MPa
Brinell hardness600–1070 MPa
CAS Number7440-52-0
History
Namingafter Ytterby (Sweden), where it was mined
DiscoveryCarl Gustaf Mosander (1843)
Isotopes of erbium
Main isotopes[4] Decay
abun­dance half-life (t1/2) mode pro­duct
160Er synth 28.58 h ε 160Ho
162Er 0.139% stable
164Er 1.60% stable
165Er synth 10.36 h ε 165Ho
166Er 33.5% stable
167Er 22.9% stable
168Er 27.0% stable
169Er synth 9.4 d β 169Tm
170Er 14.9% stable
171Er synth 7.516 h β 171Tm
172Er synth 49.3 h β 172Tm
 Category: Erbium
| references
Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (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
Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01)
See also {{Index of data sets}} · Cat:data sets (11) · (this table: )

References

  1. "Standard Atomic Weights: Erbium". CIAAW. 1999.
  2. 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.
  3. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
  4. Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.