Yero

Gikan sa Wikipedia, ang gawasnong ensiklopedya
Iron
26Fe
-

Fe

Ru
manganeseironcobalt
Appearance
lustrous metallic with a grayish tinge
A rough wedge of silvery metal

Spectral lines of iron
General properties
Name, simbolo, kaiphan iron, Fe, 26
Pronunciation Plantilya:IPAc-en
Element category puthaw nga transisyon
Group, period, block 84, d
Standard atomic weight 55.845(2)
Electron configuration [Ar] 3d6 4s2
2, 8, 14, 2
Electron shells of iron (2, 8, 14, 2)
History
Discovery before 5000 BC
Physical properties
Phase magahi
Density (near r.t.) 7.874 g·cm−3
Liquid density at m.p. 6.98 g·cm−3
Melting point 1811 K, 1538 °C, 2800 °F
Boiling point 3134 K, 2862 °C, 5182 °F
Heat of fusion 13.81 kJ·mol−1
Heat of vaporization 340 kJ·mol−1
Molar heat capacity 25.10 J·mol−1·K−1
Vapor 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, -2
(amphoteric oxide)
Electronegativity 1.83 (Pauling scale)
Ionization energies
(more)
1st: 762.5 kJ·mol−1
2nd: 1561.9 kJ·mol−1
3rd: 2957 kJ·mol−1
Atomic radius 126 pm
Covalent radius 132±3 (low spin), 152±6 (high spin) pm
Miscellanea
Crystal structure body-centered cubic
Iron has a body-centered cubic crystal structure

a=286.65 pm;
face-centered cubic
Iron has a face-centered cubic crystal structure

between 1185–1667 K
Magnetic ordering ferromagnetic
1043 K
Electrical resistivity (20 °C) 96.1 nΩ·m
Thermal conductivity 80.4 W·m−1·K−1
Thermal expansion (25 °C) 11.8 µm·m−1·K−1
Speed of sound (thin rod) (r.t.) (electrolytic)
5120 m·s−1
Young's modulus 211 GPa
Shear modulus 82 GPa
Bulk modulus 170 GPa
Poisson ratio 0.29
Mohs hardness 4
Vickers hardness 608 MPa
Brinell hardness 490 MPa
CAS registry number 7439-89-6
Most stable isotopes
Main article: Isotopes of iron
iso NA half-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 with 30 neutrons
57Fe 2.2% 57Fe is stable with 31 neutrons
58Fe 0.28% 58Fe is stable with 32 neutrons
59Fe syn 44.503 d β 1.565 59Co
60Fe syn 2.6×106 y β 3.978 60Co
t  h  u
· r

Ang yero o puthaw (Iningles iron) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Fe ug kaiphan nga atomik 26. Ang yero mao ang puthaw nga transisyon.

Ang mga gi basihan niini[usba | edit source]

  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". Journal of Molecular Spectroscopy 221 (2): 261. doi:10.1016/S0022-2852(03)00225-X. Bibcode2003JMoSp.221..261R, http://bernath.uwaterloo.ca/media/266.pdf. 


Galeriya sa hulagway[usba | edit source]