Jern
26
Fe
Gruppe
8
Periode
4
Blok
d
Protoner
Elektroner
Neutroner
26
26
30
Generelle Egenskaber
Atomnummer
26
Atommasse
55,845
Masseantal
56
Kategori
Overgangsmetaller
Farve
Grå
Radioaktiv
Nej
From the Latin word ferrum
Krystalstruktur
Rumcentreret Kubisk
Historie
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.
Elektroner i hver skal
2, 8, 14, 2
Elektronkonfiguration
[Ar] 3d6 4s2
The color of blood is due to the hemoglobin, an iron-containing protein
Fysiske Egenskaber
Tilstandsform
Fast stof
Massefylde
7,874 g/cm3
Smeltepunkt
1811,15 K | 1538 °C | 2800,4 °F
Kogepunkt
3134,15 K | 2861 °C | 5181,8 °F
Smeltevarme
13,8 kJ/mol
Fordampningsvarme
347 kJ/mol
Varmefylde
0,449 J/g·K
Forekomst i jordskorpen
6,3%
Forekomst i universet
0,11%
Billede akkrediteringer: 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-nummer
23925
Atomare egenskaber
Atomradius
126 pm
Kovalent radius
132 pm
Elektronegativitet
1,83 (Paulings skala)
Ioniseringspotentiale
7,9024 eV
Atomvolumen
7,1 cm3/mol
Varmeledningsevne
0,802 W/cm·K
Oxidationstrin
-2, -1, 1, 2, 3, 4, 5, 6, 7, 8
Anvendelser
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
Isotoper
Stabile isotoper
54Fe, 56Fe, 57Fe, 58FeUstabile isotoper
45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 55Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe, 72Fe