PERIODIC TABLE

Iron

Atomic No. 26 Fe Iron

About Iron

Iron is a transition metal with atomic number 26 that commonly occurs in the +2 and +3 oxidation states. The metal is the principal constituent of steel, while iron catalysts are used in ammonia production. Iron compounds also serve as battery materials, including lithium iron phosphate in rechargeable cells and iron disulfide in thermal battery cathodes.

Properties

Atomic Number
26
Atomic Symbol
Fe
Atomic Mass
55.845
CAS No.
7439-89-6
Density
7.874 g/cm³
Series
transition metal
Melting Point
1,538°C
Boiling Point
2,861°C
Thermal Conductivity
0.79 W/cm °C
Heat of Fusion
13.8 kJ/mol
Heat of Vaporization
347 kJ/mol
Electronegativity
1.83 pauling
Crystal Structure
Cubic
Electrical Conductivity
1×107 S/m

Iron Products

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