Eisen

26
Fe
Gruppe
8
Periode
4
Block
d
Protonen
Elektronen
Neutronen
26
26
30
Generelle Eigenschaften
Ordnungszahl
26
Atommasse
55,845
Massenzahl
56
Kategorie
Übergangsmetalle
Farbe
Grau
Radioaktiv
Nein
Aus dem Lateinischen ferrum
Kristallstruktur
Kubisch raumzentriert
Geschichte
The first iron used by humans is likely to have come from meteorites.

The oldest known iron objects used by humans are some beads of meteoric iron, made in Egypt in about 4000 BC.

The discovery of smelting around 3000 BC led to the start of the iron age around 1200 BC and the prominent use of iron for tools and weapons.
Elektronen pro Schale
2, 8, 14, 2
Elektronenkonfiguration
[Ar] 3d6 4s2
Fe
The color of blood is due to the hemoglobin, an iron-containing protein
Physikalische Eigenschaften
Aggregatzustand
Fest
Dichte
7,874 g/cm3
Schmelzpunkt
1811,15 K | 1538 °C | 2800,4 °F
Siedepunkt
3134,15 K | 2861 °C | 5181,8 °F
Schmelzwärme
13,8 kJ/mol
Verdampfungswärme
347 kJ/mol
Spezifische Wärmekapazität
0,449 J/g·K
Häufigkeit in der Erdkruste
6,3%
Häufigkeit im Universum
0,11%
Pure
Danksagungen für Bilder: Wikimedia Commons (Alchemist-hp)
Pure iron chips, electrolytically refined, as well as a high purity iron cube for comparison
CAS-Nummer
7439-89-6
PubChem CID Number
23925
Atomeigenschaften
Atomradius
126 pm
Kovalenter Radius
132 pm
Elektronegativität
1,83 (Pauling-Skala)
Ionisierungsenergie
7,9024 eV
Molares Volumen
7,1 cm3/mol
Wärmeleitfähigkeit
0,802 W/cm·K
Oxidationszustände
-2, -1, 1, 2, 3, 4, 5, 6, 7, 8
Anwendung
Iron is used to manufacture steel and other alloys important in construction and manufacturing.

Iron is a vital constituent of plant and animal life and works as an oxygen carrier in hemoglobin.

Iron oxide mixed with aluminum powder can be ignited to create a thermite reaction, used in welding and purifying ores.
Iron is considered to be non-toxic
Isotope
Stabile Isotope
54Fe, 56Fe, 57Fe, 58Fe
Instabile Isotope
45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 55Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe, 72Fe