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Iron


4
26
55.847
KEY
Chemical Element Symbol Key

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Iron
Columbia Encyclopedia
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Cobalt (Co)
Symbol: Fe
Atomic Number: 26
Atomic Weight: 55.847
Element Classification: Transition Metal
Discovered By: Known to the ancients.
Discovery Date: n/a (Unknown)
Name Origin: Anglo-Saxon: iron; symbol from Latin: ferrum (iron).
Density (g/cc): 7.874
Melting Point (K): 1808
Boiling Point (K): 3023
Appearance: Malleable, ductile, silvery-white metal
Atomic Radius (pm): 126
Atomic Volume (cc/mol): 7.1
Covalent Radius (pm): 117
Ionic Radius: 64 (+3e) 74 (+2e)
Specific Heat (@20°C J/g mol): 0.443
Fusion Heat (kJ/mol): 13.8
Evaporation Heat (kJ/mol): ~340
Thermal Conductivity (@25°C W/m K):
Debye Temperature (K): 460.00
Pauling Negativity Number: 1.83
First Ionizing Energy (kJ/mol): 759.1
Oxidation States: 6, 3, 2, 0, -2
Electronic Configuration: [Ar] 3d6 4s2
Lattice Structure: Body-Centered Cubic (BCC
Lattice Constant (Å): 2.870
Lattice C/A Ratio: n/a


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