Železo

26
Fe
Skupina
8
Perioda
4
Blok
d
Protons
Electrons
Neutrons
26
26
30
General Properties
Vrstno število
26
Atomska teža
55,845
Mass Number
56
Kategorija
Prehodne kovine
Barva
Gray
Radioactive
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.
Electrons per shell
2, 8, 14, 2
Razporeditev elektronov
[Ar] 3d6 4s2
Fe
The color of blood is due to the hemoglobin, an iron-containing protein
Physical Properties
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
Abundance in Earth's crust
6,3%
Abundance in Universe
0,11%
Pure
Zasluge za slike: Wikimedia Commons (Alchemist-hp)
Pure iron chips, electrolytically refined, as well as a high purity iron cube for comparison
CAS Number
7439-89-6
PubChem CID Number
23925
Atomic Properties
Atomski polmer
126 pm
Kovalentni polmer
132 pm
Elektronegativnost
1,83 (Paulingova lestvica)
Ionization Potential
7,9024 eV
Atomic Volume
7,1 cm3/mol
Toplotna prevodnost
0,802 W/cm·K
Oksidacijska stanja
-2, -1, 1, 2, 3, 4, 5, 6, 7, 8
Applications
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
Isotopes
Stable Isotopes
54Fe, 56Fe, 57Fe, 58Fe
Unstable Isotopes
45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 55Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe, 72Fe