Iron Element Properties

Iron

d25
Mn
Manganese
d26
Fe
Iron
d27
Co
Cobalt
General
Name(Iron)
Symbol(Fe)
Number(26)
Group Number(8)
Group(Transition metals)
Block(d)
Density(7.86 g/cm3)
Atomic Weight(55.847 g/mol)
Atomic Volume(7.1 cm3/mol)
Discover(None)


States
State(Solid)
Melting Point(1811 K)
Boiling Point(3134 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(13.81 kJ/mol)
Heat of Vaporization(340 kJ/mol)


Energies
First Ionization Energy(759.3 kJ/mole)
Second Ionization Energy(1561.1 kJ/mole)
Third Ionization Energy(2957.3 kJ/mole)
Electronegativity(1.9)
Electron Affinity(15.7 kJ/mole)
Specific Heat(0.44 J/gK)
Heat Atomization(418 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,14,2)
Electron Configuration([Ar] 3d6 4s2)
Minimum Oxidation Number(-2)
Maximum Oxidation Number(6)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(3)


Appearance and Characteristics
Crystal Structure(body-centered cubic)
Characteristics(fairly soft when pure)
Color(gray)
Uses(steel)
Hardness(4.5 mohs)
Toxicity(None)


Reactions
Reaction with Air(mild, =>Fe3O4)
Reaction with 6M HCl(mild, =>H2, FeCl2)
Reaction with 15M HNO3(passivated)
Reaction with 6M NaOH(None)


Other Forms
Number of Isotopes(4)
Hydride(None)
Oxide(FeO Fe3O4 Fe2O3)
Chloride(FeCl2 FeCl3)


Radius
Atomic Radius(126 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(83.5 pm)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(73.8 pm)


Conductivity
Thermal Conductivity(72.8 J/m-sec-deg)
Electrical Conductivity(102.987 1/mohm-cm)
Polarizability(8.4 A3)


Abundance
Source(Hematite,magnetite(oxide))
Relation Abundance Solar System(5.954 log)
Abundance Earths Crust(4.8 log)


d25
Mn
Manganese
d26
Fe
Iron
d27
Co
Cobalt

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