Iron, ₂₆Fe

Iron
Pronunciation	( Pangèḍing)
Allotropes	see Allotropes of iron
Appearance	lustrous metallic with a grayish tinge
Standard atomic weight Ar°(Fe)
	Cèṭa'an:Infobox element/standard atomic weight format
Mass number	Fe:
Iron in the periodic table
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson – ↑ Fe ↓ Ru manganese ← iron → cobalt
Atomic number (Z)	26
Group	group 8
Period	period 4
Block	data-sort-value="3026" |#99ccff
Electron configuration	[Ar] 3d6 4s2
Electrons per shell	2, 8, 14, 2
Physical properties
Phase at STP	Solid
Melting point	1811 K ​(1538 °C, ​2800 °F)
Boiling point	3134 K ​(2861 °C, ​5182 °F)
Density (at 20° C)	7.874 g/cm3 [1]
when liquid (at m.p.)	6.98 g/cm3
Heat of fusion	13.81 kJ/mol
Heat of vaporization	340 kJ/mol
Molar heat capacity	25.10 J/(mol·K)
Vapor pressure Cèṭa'an:Infobox element/vapor pressure table
Atomic properties
Oxidation states	−4, −2, −1, 0, +1,[2] +2, +3, +4, +5,[3] +6, +7[4] (an amphoteric oxide)
Electronegativity	Pauling scale: 1.83
Ionization energies	1st: 762.5 kJ/mol 2nd: 1561.9 kJ/mol 3rd: 2957 kJ/mol (more)
Atomic radius	empirical: 126 pm
Covalent radius	Low spin: 132±3 pm High spin: 152±6 pm
Van der Waals radius	194  pm
Spectral lines of iron
Other properties
Natural occurrence	Fe: Primordial-wl>Primordial
Crystal structure	α-Fe: ​Cèṭa'an:Infobox element/crystal structure (cI2)
Lattice constant	Cèṭa'an:Infobox element/crystal structure a = 286.65 pm (at 20 °C)[1]
Crystal structure	γ-Fe (912–1394 °C): ​Cèṭa'an:Infobox element/crystal structure (cF4)
Lattice constant	Cèṭa'an:Infobox element/crystal structure a = 364.68 pm (at 916 °C)[5]
Thermal expansion	12.07×10−6/K (at 20 °C)[1]
Thermal conductivity	80.4 W/(m⋅K)
Electrical resistivity	96.1 nΩ⋅m (at 20 °C)
Curie point	1043 K
Magnetic ordering	ferromagnetic
Young's modulus	211 GPa
Shear modulus	82 GPa
Bulk modulus	170 GPa
Speed of sound thin rod	5120 m/s (at r.t.) (electrolytic)
Poisson ratio	0.29
Mohs hardness	4
Vickers hardness	608 MPa
Brinell hardness	200–1180 MPa
CAS Number	7439-89-6
History
Naming	probably from a PIE root meaning 'blood', for the color of its oxides
Discovery	before 5000 BC
Symbol	"Fe": from Latin ferrum
Isotopes of iron t b
Template:infobox iron isotopes does not exist
Cèṭa'an:Category-inline tèngghu parâmbhâg beccè' | references

Bessè arobâ arkan kimiya; sè anḍi' simbol kimia Fe (Pènangkan Latin ferrum 'bessè') bân nomor atom 26. Arèya sabuwâ logam sè kalebbhu è jhijhir transisis partama bân ghimpo' 8 ḍâri tabèl pèriodik. Mètorot massa, arèya arobâaghi arkan sè palèng bâttra è Bhumi, mabujud sabâgiyân rajâ inti lowar bân inti ḍâlem Bhumi. Rèya arobâaghi arkan kaempa' sè palèng èbbhâ' è kerak Bhumi, sè sadhuman rajâ ètompo' bi' mètèorit ḍâlem dhângka' logamma.

1. 1 2 3 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.
2. ↑ Ram, R. S.; Bernath, P. F. (2003). "Fourier transform emission spectroscopy of the g⁴Δ–a⁴Δ system of FeCl". 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. ↑ Cardarelli, François (2008). Materials Handbook: A Concise Desktop Reference. London: Springer. p. 65. ISBN 1-84628-668-9.

Serradhân atopik umum ka`ḍinto èngghi panèka sabâgiyân rintisan. Abâ`na kèngèng abhânto Wikipèḍia kalabân ngembhângaghi. t p b