Airn

Frae Wikipedia
Jump to navigation Jump to search
Airn,  26Fe
Pure airn chips wi a heich purity airn cube
General properties
Appearance lustrous metallic wi a grayish tinge
Staundart atomic wecht (Ar, staundart) 55.845(2)
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 Gold 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
manganeseairncobalt
Atomic nummer (Z) 26
Group group 8
Period period 4
Element category   transition metal
Block d-block
Electron confeeguration [Ar] 3d6 4s2
Electrons per shell
2, 8, 14, 2
Pheesical properties
Phase (at STP) solit
Meltin pynt 1811 K ​(1538 °C, ​2800 °F)
Bylin 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 vapourisation 340 kJ/mol
Molar heat capacity 25.10 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 6, 5,[1] 4, 3, 2, 1[2], -1, -2 amphoteric oxide
Electronegativity Pauling scale: 1.83
Ionisation energies
Atomic radius empirical: 126 pm
Covalent radius 132±3 (law spin), 152±6 (heich spin) pm
Color lines in a spectral range
Miscellanea
Creestal structurbody-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 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
Bouk modulus 170 GPa
Poisson ratio 0.29
Mohs haurdness 4
Vickers haurdness 608 MPa
Brinell haurdness 490 MPa
CAS Nummer 7439-89-6
History
Diskivery afore 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 | in Wikidata

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 bein the last element made bi stellar nucleosynthesis, an sicweys 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. main metal in the core o the earth. this is a great metal it wis uised syne the begining o times

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.