Template:Infobox airn

Airn, 26Fe
Template:Infobox element/symbol-to-top-image/alt
Airn
Appearancelustrous metallic wi a grayish tinge
Standard atomic weight Ar, std(Fe)55.845(2)[1]
Airn 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
-
↑
Fe
↓
Ru
manganese ← airn → cobalt
Atomic nummer (Z)26
Groupgroup 8
Periodperiod 4
Blockd-block
Element category  Transeetion metal
Electron confeeguration[Ar] 3d6 4s2
Electrons per shell2, 8, 14, 2
Pheesical properties
Phase at STPsolit
Meltin pynt1811 K ​(1538 °C, ​2800 °F)
Bylin pynt3134 K ​(2862 °C, ​5182 °F)
Density (near r.t.)7.874 g/cm3
when liquid (at m.p.)6.98 g/cm3
Heat o fusion13.81 kJ/mol
Heat o vapourisation340 kJ/mol
Molar heat capacity25.10 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1728 1890 2091 2346 2679 3132
Atomic properties
Oxidation states−4, −2, −1, 0, +1,[2] +2, +3, +4, +5,[3] +6, +7[4] (an amphoteric oxide)
ElectronegativityPauling scale: 1.83
Ionisation energies
  • (more)
Atomic radiusempirical: 126 pm
Covalent radius132±3 (law spin), 152±6 (heich spin) pm
Colour lines in a spectral range
Colour lines in a spectral range
Spectral lines o airn
Ither properties
Naitural occurrenceprimordial
Creestal structur ​body-centred cubic (bcc)
Body-centered cubic creestal structur for airn

a=286.65 pm;
Speed o soond thin rod(electrolytic)
5120 m/s (at r.t.)
Thermal expansion11.8 µm/(m·K) (at 25 °C)
Thermal conductivity80.4 W/(m·K)
Electrical resistivity96.1 n Ω·m (at 20 °C)
Magnetic orderinferromagnetic
Young's modulus211 GPa
Shear modulus82 GPa
Bulk modulus170 GPa
Poisson ratio0.29
Mohs haurdness4
Vickers haurdness608 MPa
Brinell haurdness490 MPa
CAS Nummer7439-89-6
History
Diskiveryafore 5000 BC
Main isotopes o airn
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
54Fe 5.8% >3.1×1022 y (β+β+) 54Cr
55Fe syn 2.73 y ε 55Mn
56Fe 91.72% stable
57Fe 2.2% stable
58Fe 0.28% stable
59Fe syn 44.503 d β− 59Co
60Fe syn 2.6×106 y β− 60Co
Decay modes in parentheses are predictit, but hae nae yet been observed
| references
style="text-align:left"|
data m.p. cat v
in calc from C diff report ref
C 1538 — —
K 1811 1811 0
F 2800 2800 0
WD 1538 Celsius Edit this at Wikidata [7]
input C: 1538, K: 1811, F: 2800
comment
style="text-align:left"|
data b.p. cat v
in calc from C diff report ref
C 2862 — —
K 3134 3135 -1 delta
F 5182 5184 -2 delta
WD 2861 Celsius Edit this at Wikidata [7]
input C: 2862, K: 3134, F: 5182
comment

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  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. ↑ Ram, R. S. & Bernath, P. F. (2003). "Fourier transform emission spectroscopy of the g4Δ-a4Δ system of FeCl" (PDF). Journal of Molecular Spectroscopy. 221 (2): 261. Bibcode:2003JMoSp.221..261R. doi:10.1016/S0022-2852(03)00225-X.
  3. ↑ Demazeau, G.; Buffat, B.; Pouchard, M.; Hagenmuller, P. (1982). "Recent developments in the field of high oxidation states of transition elements in oxides stabilization of Six-coordinated Iron(V)". Zeitschrift für anorganische und allgemeine Chemie. 491: 60–66. doi:10.1002/zaac.19824910109.
  4. ↑ Lu, J.; Jian, J.; Huang, W.; Lin, H.; Li, J; Zhou, M. (2016). "Experimental and theoretical identification of the Fe(VII) oxidation state in FeO4−". Physical Chemistry Chemical Physics. 18 (45): 31125–31131. Bibcode:2016PCCP...1831125L. doi:10.1039/C6CP06753K. PMID 27812577.
  5. ↑ Demazeau, G.; Buffat, B.; Pouchard, M.; Hagenmuller, P. (1982). "Recent developments in the field of high oxidation states of transition elements in oxides stabilization of Six-coordinated Iron(V)". Zeitschrift für anorganische und allgemeine Chemie. 491: 60. doi:10.1002/zaac.19824910109.
  6. ↑ Ram, R. S. and Bernath, P. F. (2003). "Fourier transform emission spectroscopy of the g4Δ-a4Δ system of FeCl" (PDF). Journal of Molecular Spectroscopy. 221 (2): 261. Bibcode:2003JMoSp.221..261R. doi:10.1016/S0022-2852(03)00225-X.CS1 maint: multiple names: authors leet (link)
  7. ↑ a b "CRC Handbook of Chemistry and Physics. 81st Edition"; date o publication: 2000; page: 4-64.