Chemistry

Periodic table of the elements

Periodic table of the elements



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Fe (iron)

Tab. 1
iron
Name of the element:iron
Latin name:Ferrum
English name:Iron
French name:Fer
Symbol:Fe
Atomic number:26
Condition at 25 ° C:solid, metal
Frequency (in ppm):41000
Discovered by:approx. 2500 BC Chr.
Electron configuration:[Ar]3d64s2
Oxidation states:+2, +3, +6
Relative atomic mass:55.847
Electronegativity:1.83 (Pauling) 1.64 (Allred)
Atomic radius (in pm):124.1
Ionization energy (in eVatom-1):7.870
Density (in kgm-3):7874
Melting temperature (in K):1808
Boiling temperature (in K):3023
Tab. 2
Isotopes of iron
Mass numberAtomic massFrequency /%Nuclear spin
52*51.948100
5453.93965.820
55*54.93830-32
5655.934991.720
5756.93542.100
5857.93330.280
59*58.93490+32
60*59.934100

* Isotope is not stable and decays


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