Cèṭa'an:Infobox iron

	child table, as reused in {IB-Fe} t; b; r;
Main isotopes of Fe: Iron
	Cèṭa'an:Infobox Fe: Iron isotopes

Iron, ₂₆Fe
Iron
Pronunciation	/ˈaɪərn/ ( 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
	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
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, +3, +4, +5, +6, +7 (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 [1] 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 structurea = 286.65 pm (at 20 °C)
Crystal structure	γ-Fe (912–1394 °C): Cèṭa'an:Infobox element/crystal structure (cF4)
Lattice constant	Cèṭa'an:Infobox element/crystal structurea = 364.68 pm (at 916 °C)
Thermal expansion	12.07×10−6/K (at 20 °C)
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

Fe · Fe: Iron
	^iso ₂₆Fe [e] IB-Fe [e] IBisos [e]
cat:Fe (0) cat:Fe-isotopes (0) Commons Wikidata:Q677 Wiktionary
indexes by PT (page) t b

Data sets read by {{Infobox element}}
Name and identifiers	tèngghu beccè'
Symbol etymology (11 non-trivial)	tèngghu beccè'
Top image (caption, alt)	caption: tèngghu beccè' alt: tèngghu beccè'
Pronunciation	tèngghu beccè'
Allotropes (overview)	tèngghu beccè'
Group (overview)	tèngghu beccè'
Period (overview)	tèngghu beccè'
Block (overview)	tèngghu beccè'
Natural occurrence	tèngghu beccè'
Phase at STP	tèngghu beccè'
Oxidation states	tèngghu beccè'
Spectral lines image	tèngghu beccè'
Electron configuration (cmt, ref)	tèngghu beccè'
Isotopes
Standard atomic weight	tèngghu beccè'
most stable isotope	tèngghu beccè'
Wikidata
Wikidata *	tèngghu beccè'
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (38) · (this table: t )

Sombher

↑ ^1,0 ^1,1 ^1,2 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.
↑ 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.
↑ 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.
↑ 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.
↑ Cardarelli, François (2008). Materials Handbook: A Concise Desktop Reference. London: Springer. p. 65. ISBN 1-84628-668-9.

[Arblaster_2018-1] 1,0 ^1,1 ^1,2 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.

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