Template:Infobox holmium

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[[Category:Template:Pagetype with short description]]

Holmium, 67Ho
Holmium2.jpg
Holmium
Pronunciation/ˈhlmiəm/ (Template:Respell)
Appearancesilvery white
Standard atomic weight Ar, std(Ho)Template:Val[1]
Holmium in the periodic table
Template:Periodic table (32 columns, micro)

Ho

Es
dysprosiumholmiumerbium
Atomic number (Z)67
Groupn/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|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
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 Category: Holmium
| references

[[Category:Infobox templates|Template:Remove first word]]

data m.p. cat
in calc from C diff report ref
C 1461
K 1734 1734 0
F 2662 2662 0 Template:Subpage other
max precision 0
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: 1461, K: 1734, F: 2662
comment
data b.p. cat
in calc from C diff report ref
C 2600
K 2873 2870 3 delta
F 4712 4710 2 delta Template:Subpage other
max precision 0
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: 2600, K: 2873, F: 4712
comment
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
Category (enwiki)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03)
See also {{Infobox element/symbol-to--navbox}}

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 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.

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