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Template:Infobox erbium

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Erbium, 68Er
Template:Infobox element/symbol-to-top-image/alt
Erbium
Pronunciation/ˈɜːrbiəm/ (UR-bee-əm)
Appearancesillery white
Standard atomic weight Ar, std(Er)167.259(3)[1]
Erbium in the periodic cairt
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 Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) 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 Gowd Mercur (element) Thallium Leid (element) 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
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Er

Fm
holmiumerbiumthulium
Atomic nummer (Z)68
Groupgroup n/a
Periodperiod 6
Blockf-block
Element category  Lanthanide
Electron confeeguration[Xe] 4f12 6s2
Electrons per shell2, 8, 18, 30, 8, 2
Pheesical properties
Phase at STPsolit
Meltin pynt1802 K ​(1529 °C, ​2784 °F)
Bylin pynt3141 K ​(2868 °C, ​5194 °F)
Density (near r.t.)9.066 g/cm3
when liquid (at m.p.)8.86 g/cm3
Heat o fusion19.90 kJ/mol
Heat o vapourisation280 kJ/mol
Molar heat capacity28.12 J/(mol·K)
Vapour pressur
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
Atomic radiusempirical: 176 pm
Covalent radius189±6 pm
Colour lines in a spectral range
Colour lines in a spectral range
Spectral lines o erbium
Ither properties
Naitural occurrenceprimordial
Creestal structurhexagonal close-packed (hcp)
Hexagonal close packed creestal structur for erbium
Speed o soond thin rod2830 m/s (at 20 °C)
Thermal expansion(r.t.) (poly) 12.2 µm/(m·K)
Thermal conductivity14.5 W/(m·K)
Electrical resistivity(r.t.) (poly) 0.860 µ Ω·m
Magnetic orderinparamagnetic at 300 K
Young's modulus69.9 GPa
Shear modulus28.3 GPa
Bulk modulus44.4 GPa
Poisson ratio0.237
Vickers haurdness589 MPa
Brinell haurdness814 MPa
CAS Nummer7440-52-0
History
DiskiveryCarl Gustaf Mosander (1842)
Main isotopes o erbium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
160Er syn 28.58 h ε 160Ho
162Er 0.139% >1.4×1014 y (α) 158Dy
(β+β+) 162Dy
164Er 1.601% - (α) 160Dy
(β+β+) 164Dy
165Er syn 10.36 h ε 165Ho
166Er 33.503% - (α) 162Dy
167Er 22.869% - (α) 163Dy
168Er 26.978% - (α) 164Dy
169Er syn 9.4 d β 169Tm
170Er 14.910% >3.2×1017 y (α) 166Dy
(ββ) 170Yb
171Er syn 7.516 o β 171Tm
172Er syn 49.3 o β 172Tm
Decay modes in parentheses are predictit, but hae nae yet been observed
| references
style="text-align:left"|
in calc from C diff report ref
C 1529
K 1802 1802 0
F 2784 2784 0
WD Edit this at Wikidata
input C: 1529, K: 1802, F: 2784
comment
style="text-align:left"|
in calc from C diff report ref
C 2868
K 3141 3141 0
F 5194 5194 0
WD Edit this at Wikidata
input C: 2868, K: 3141, F: 5194
comment

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Yttrium and all lanthanides except Ce, Pm, Eu, Tm, Yb 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.