Železo
26
Fe
Skupina
8
Perioda
4
Blok
d
Protoni
Elektroni
Nevtroni
26
26
30
Splošne lastnosti
Vrstno število
26
Atomska teža
55,845
Masno število
56
Kategorija
Prehodne kovine
Barva
Siva
Radioaktivno
Ne
From the Latin word ferrum
Kristalna struktura
Telesno centrirana kubična
Zgodovina
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.
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.
Elektroni po lupinah
2, 8, 14, 2
Razporeditev elektronov
[Ar] 3d6 4s2
The color of blood is due to the hemoglobin, an iron-containing protein
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
7,874 g/cm3
Tališče
1811,15 K | 1538 °C | 2800,4 °F
Vrelišče
3134,15 K | 2861 °C | 5181,8 °F
Talilna toplota
13,8 kJ/mol
Izparilna toplota
347 kJ/mol
Toplotna kapaciteta
0,449 J/g·K
Zastopanost v Zemljini skorji
6,3%
Zastopanost v vesolju
0,11%
Zasluge za slike: Wikimedia Commons (Alchemist-hp)
Pure iron chips, electrolytically refined, as well as a high purity iron cube for comparison
CAS številka
7439-89-6
PubChem CID številka
23925
Atomske lastnosti
Atomski polmer
126 pm
Kovalentni polmer
132 pm
Elektronegativnost
1,83 (Paulingova lestvica)
Ionizacijski potencial
7,9024 eV
Atomski volumen
7,1 cm3/mol
Toplotna prevodnost
0,802 W/cm·K
Oksidacijska stanja
-2, -1, 1, 2, 3, 4, 5, 6, 7, 8
Uporabe
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 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
Izotopi
Stabilni izotopi
54Fe, 56Fe, 57Fe, 58FeNestabilni izotopi
45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 55Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe, 72Fe