Airn

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Airn,  26Fe
A rough wedge of silvery metal
Iron Spectrum.jpg
General properties
Name, seembol airn, Fe
Pronunciation /ˈ.ərn/
Appearance lustrous metallic wi a grayish tinge
Airn in the periodic cairt
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline yird metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline yird metal)
Aluminium (post-transeetion metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline yird metal)
Scandium (transeetion metal)
Titanium (transeetion metal)
Vanadium (transeetion metal)
Chromium (transeetion metal)
Manganese (transeetion metal)
Iron (transeetion metal)
Cobalt (transeetion metal)
Nickel (transeetion metal)
Copper (transeetion metal)
Zinc (transeetion metal)
Gallium (post-transeetion metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline yird metal)
Yttrium (transeetion metal)
Zirconium (transeetion metal)
Niobium (transeetion metal)
Molybdenum (transeetion metal)
Technetium (transeetion metal)
Ruthenium (transeetion metal)
Rhodium (transeetion metal)
Palladium (transeetion metal)
Silver (transeetion metal)
Cadmium (transeetion metal)
Indium (post-transeetion metal)
Tin (post-transeetion metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline yird metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transeetion metal)
Tantalum (transeetion metal)
Tungsten (transeetion metal)
Rhenium (transeetion metal)
Osmium (transeetion metal)
Iridium (transeetion metal)
Platinum (transeetion metal)
Gold (transeetion metal)
Mercury (transeetion metal)
Thallium (post-transeetion metal)
Lead (post-transeetion metal)
Bismuth (post-transeetion metal)
Polonium (post-transeetion metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline yird metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transeetion metal)
Dubnium (transeetion metal)
Seaborgium (transeetion metal)
Bohrium (transeetion metal)
Hassium (transeetion metal)
Meitnerium (unkent chemical properties)
Darmstadtium (unkent chemical properties)
Roentgenium (unkent chemical properties)
Copernicium (transeetion metal)
Ununtrium (unkent chemical properties)
Flerovium (post-transeetion metal)
Ununpentium (unkent chemical properties)
Livermorium (unkent chemical properties)
Ununseptium (unkent chemical properties)
Ununoctium (unkent chemical properties)
-

Fe

Ru
manganeseairncobalt
Atomic nummer 26
Staundart atomic wicht (±) (Ar) 55.845(2)
Element category   transeetion metal
Group, block group 8, d-block
Period period 4
Electron configuration [Ar] 3d6 4s2
per shell
2, 8, 14, 2
Pheesical properties
Phase solid
Meltin pynt 1811 K ​(1538 °C, ​2800 °F)
Boilin pynt 3134 K ​(2862 °C, ​5182 °F)
Density near r.t. 7.874 g/cm3
when liquid, at m.p. 6.98 g/cm3
Heat o fusion 13.81 kJ/mol
Heat o 340 kJ/mol
Molar heat capacity 25.10 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1728 1890 2091 2346 2679 3132
Atomic properties
Oxidation states 6, 5,[1] 4, 3, 2, 1[2], -1, -2amphoteric oxide
Electronegativity Pauling scale: 1.83
energies
(mair)
Atomic radius empirical: 126 pm
Covalent radius 132±3 (law spin), 152±6 (heich spin) pm
Miscellanea
Crystal structur body-centered cubic (bcc)
Body-centered cubic crystal structure for airn

a=286.65 pm;
Speed o soond thin rod (electrolytic)
5120 m/s (at r.t.)
Thermal expansion 11.8 µm/(m·K) (at 25 °C)
Thermal conductivity 80.4 W/(m·K)
Electrical resistivity 96.1 n Ω·m (at 20 °C)
Magnetic orderin ferromagnetic
Young's modulus 211 GPa
Shear modulus 82 GPa
Bulk modulus 170 GPa
Poisson ratio 0.29
Mohs haurdness 4
Vickers haurdness 608 MPa
Brinell haurdness 490 MPa
CAS Registry Nummer 7439-89-6
History
Discovery afore 5000 BC
Maist stable isotopes
Main article: Isotopes o airn
iso NA hauf-life DM DE (MeV) DP
54Fe 5.8% >3.1×1022 y (β+β+) 0.6800 54Cr
55Fe syn 2.73 y ε 0.231 55Mn
56Fe 91.72% 56Fe is stable wi 30 neutrons
57Fe 2.2% 57Fe is stable wi 31 neutrons
58Fe 0.28% 58Fe is stable wi 32 neutrons
59Fe syn 44.503 d β 1.565 59Co
60Fe syn 2.6×106 y β 3.978 60Co
Decay modes in parentheses are predictit, but hae nae yet been observed
· references

Airn is a chemical element in the periodic chart that haes the seembol Fe (L.: Ferrum) an atomic nummer 26. Airn is a group 8 an period 4 Metal. Airn is kent for being the last element made bi stellar nucleosynthesis, an thus the maist wechtie element that disna require a supernova or seemilar catacleesmic event for tae be furmed. It is, tharefore, the maist rowthie wechtie metal in the universe.

References[eedit | eedit soorce]

  1. 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. 
  2. 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.