Discovered By: Prehistoric
Discovery year: -2000

The following table showing some properties of Iron(Fe):

Table Example
Atomic number 26
Group 8
Period 4
Block d
Electrons 26
Protons 26
Neutrons 30
Atomic weight 55.845
Oxidation states -2, +2, +3
Ionic charge Fe^3+, Fe^2+


Table Example
Electrons per shell K2 L8 M14 N2
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6
Atomic radius 156 pm
Covalent radius 132 pm
Boiling point 2861°C
Melting point 1538°C
Phase Solid
Fusion heat 13.8 kJ.mol^-1
Thermal expansion 1.18*10^-5 K^-1
Vaporization heat 347 kJ.mol^-1


Table Example
Color Gray
Brinell hardness 490 MPa
Bulk modulus 170 GPa
Density 7874 kg.m^-3
Liquid density 6980 kg.m^-3
Mohs hardness 4
Molar volume 7.092*10^-6 m^3.mol^-1
Poisson ratio 0.29
Shear modulus 82 GPa
Sound speed 4910 m.s^-1


Table Example
Vickers hardness 608 MPa
Young's modulus 211 GPa
Electrical conductivity 1*10^7 S.m^-1
Electrical type Conductor
Magnetic type Ferromagnetic
Resistivity 9.7*10^-8 Ohm.m
Curie point 1043 K
Electronegativity 1.83
Valence 3
radioactive No
Neutron cross section 2.56 barn