Rauta
26
Fe
Ryhmä
8
Jakso
4
Lohko
d
Protonia
Elektronit
Neutronia
26
26
30
Yleiset ominaisuudet
Järjestysluku
26
Atomipaino
55,845
Massaluku
56
Luokka
Siirtymäalkuaineet
Väri
Harmaa
Radioaktiivisuus
Ei
From the Latin word ferrum
Kiderakenne
Tilakeskinen kuutiollinen
Historia
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.
Elektroneja elektronikuorilla
2, 8, 14, 2
Orbitaalirakenne
[Ar] 3d6 4s2
The color of blood is due to the hemoglobin, an iron-containing protein
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
7,874 g/cm3
Sulamispiste
1811,15 K | 1538 °C | 2800,4 °F
Kiehumispiste
3134,15 K | 2861 °C | 5181,8 °F
Sulamislämpö
13,8 kJ/mol
Höyrystymislämpö
347 kJ/mol
Ominaislämpökapasiteetti
0,449 J/g·K
Esiintyvyys maankuoressa
6,3%
Esiintyvyys maailmankaikkeudessa
0,11%
Kuvalähteet: Wikimedia Commons (Alchemist-hp)
Pure iron chips, electrolytically refined, as well as a high purity iron cube for comparison
CAS-numero
7439-89-6
PubChem CID-numero
23925
Atomiominaisuudet
Atomisäde
126 pm
Kovalenttisäde
132 pm
Elektronegatiivisuus
1,83 (Paulingin asteikko)
Ionisoitumispotentiaali
7,9024 eV
Moolitilavuus
7,1 cm3/mol
Lämmönjohtavuus
0,802 W/cm·K
Hapetusluvut
-2, -1, 1, 2, 3, 4, 5, 6, 7, 8
Käyttö
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
Isotooppi
Vakaat isotoopit
54Fe, 56Fe, 57Fe, 58FeEpävakaat isotoopit
45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 55Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe, 72Fe