Difference between revisions of "Template:Infobox chromium"

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}}<noinclude>[[Category:Periodic table infobox templates|Chromium]]
 
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Revision as of 02:28, 24 August 2012

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

Chromium, 24Cr
Chromium crystals and 1cm3 cube.jpg
Chromium
Appearancesilvery metallic
Standard atomic weight Ar, std(Cr)Template:Val[1]
Chromium in the periodic table
Template:Periodic table (32 columns, micro) -

Cr

Mo
vanadiumchromiummanganese
Atomic number (Z)24
Groupgroup 6
Periodperiod 4
Block  d-block
Electron configuration[Ar] 3d5 4s1
Electrons per shell2, 8, 13, 1
Physical properties
Phase at STPsolid
Melting point2180 K ​(1907 °C, ​3465 °F)
Boiling point2944 K ​(2671 °C, ​4840 °F)
Density (near r.t.)7.19 g/cm3
when liquid (at m.p.)6.3 g/cm3
Heat of fusion21.0 kJ/mol
Heat of vaporization339.5 kJ/mol
Molar heat capacity23.35 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1656 1807 1991 2223 2530 2942
Atomic properties
Oxidation states−4, −2, −1, 0, +1, +2, +3, +4, +5, +6 (depending on the oxidation state, an acidic, basic, or amphoteric oxide)
ElectronegativityPauling scale: 1.66
Ionization energies
Atomic radiusempirical: 128 pm
Covalent radius139±5 pm
Spectral lines of chromium
Other properties
Natural occurrenceprimordial
Crystal structurebody-centered cubic (bcc)
Speed of sound thin rod5940 m/s (at 20 °C)
Thermal expansion4.9 µm/(m·K) (at 25 °C)
Thermal conductivity93.9 W/(m·K)
Electrical resistivity125 n Ω·m (at 20 °C)
Magnetic orderingAFM (rather: SDW[2])
Young's modulus279 GPa
Shear modulus115 GPa
Bulk modulus160 GPa
Poisson ratio0.21
Mohs hardness8.5
Vickers hardness1060 MPa
Brinell hardness1120 MPa
CAS Number7440-47-3
Main isotopes of chromium
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
50Cr 4.345% > 1.8×1017y εε 50Ti
51Cr syn 27.7025 d ε 51V
γ -
52Cr 83.789% stable
53Cr 9.501% stable
54Cr 2.365% stable
Category Category: Chromium
| references

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

data m.p. cat
in calc from C diff report ref
C 1907
K 2180 2180 0
F 3465 3465 0 Template:Subpage other
max precision 0
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: 1907, K: 2180, F: 3465
comment
data b.p. cat
in calc from C diff report ref
C 2671
K 2944 2944 0
F 4840 4840 0 Template:Subpage other
max precision 0
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: 2671, K: 2944, F: 4840
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. Fawcett, Eric (1988). "Spin-density-wave antiferromagnetism in chromium". Reviews of Modern Physics. 60: 209. Bibcode:1988RvMP...60..209F. doi:10.1103/RevModPhys.60.209.

id:Templat:Kotak info kromium ca:Plantilla:Crom fa:الگو:جعبه اطلاعات کروم