Template:Infobox holmium

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Holmium, 67Ho
Holmium2.jpg
Holmium
Pronunciation/ˈhlmiəm/ (HOHL-mee-əm)
Appearancesilvery white
Standard atomic weight Ar°(Ho)
  • 164.930329±0.000005
  • 164.93±0.01 (abridged)[1]
Holmium 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


Ho

Es
dysprosiumholmiumerbium
Atomic number (Z)67
Groupgroup n/a
Periodperiod 6
Block  f-block
Electron configuration[Xe] 4f11 6s2
Electrons per shell2, 8, 18, 29, 8, 2
Physical properties
Phase at STPsolid
Melting point1734 K ​(1461 °C, ​2662 °F)
Boiling point2873 K ​(2600 °C, ​4712 °F)
Density (near r.t.)8.79 g/cm3
when liquid (at m.p.)8.34 g/cm3
Heat of fusion17.0 kJ/mol
Heat of vaporization251 kJ/mol
Molar heat capacity27.15 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1432 1584 (1775) (2040) (2410) (2964)
Atomic properties
Oxidation states0,[2] +1, +2, +3 (a basic oxide)
ElectronegativityPauling scale: 1.23
Ionization energies
  • 1st: 581.0 kJ/mol
  • 2nd: 1140 kJ/mol
  • 3rd: 2204 kJ/mol
Atomic radiusempirical: 176 pm
Covalent radius192±7 pm
Color lines in a spectral range
Spectral lines of holmium
Other properties
Natural occurrenceprimordial
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed crystal structure for holmium
Speed of sound thin rod2760 m/s (at 20 °C)
Thermal expansionpoly: 11.2 µm/(m⋅K) (at r.t.)
Thermal conductivity16.2 W/(m⋅K)
Electrical resistivitypoly: 814 nΩ⋅m (at r.t.)
Magnetic orderingparamagnetic
Young's modulus64.8 GPa
Shear modulus26.3 GPa
Bulk modulus40.2 GPa
Poisson ratio0.231
Vickers hardness410–600 MPa
Brinell hardness500–1250 MPa
CAS Number7440-60-0
History
DiscoveryJacques-Louis Soret and Marc Delafontaine (1878)
Main isotopes of holmium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
163Ho syn 4570 y ε 163Dy
164Ho syn 29 min ε 164Dy
165Ho 100% stable
166Ho syn 26.763 h β 166Er
167Ho syn 3.1 h β 167Er
 Category: Holmium
| references
Dy ←

i'box Dy

iso
67
Ho (E)
→ Er

i'box Er

  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Allotropes (demo)
Group (demo)
Period (demo)
Block (demo)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Wikidata *
Symbol etymology (11 non-trivial)
* Not used in {{Infobox element}} (2021-12-24)
See also Category:Infobox element data sets (0)

References

  1. ^ "Standard Atomic Weights: Holmium". CIAAW. 2021.
  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.