Ferro
26
Fe
Grup
8
Període
4
Bloc
d
Protons
Electrons
Neutrons
26
26
30
Propietats Generals
Nombre atòmic
26
Massa atòmica
55,845
Nombre de massa
56
Categoria
Metalls de transició
Color
Gris
Radioactiu
No
From the Latin word ferrum
Estructura cristal·lina
Cos cúbic centrat
Història
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.
Electrons per capa
2, 8, 14, 2
Configuració electrònica
[Ar] 3d6 4s2
The color of blood is due to the hemoglobin, an iron-containing protein
Propietats Físiques
Fase
Sòlid
Densitat
7,874 g/cm3
Punt de fusió
1811,15 K | 1538 °C | 2800,4 °F
Punt d'ebullició
3134,15 K | 2861 °C | 5181,8 °F
Entalpia de fusió
13,8 kJ/mol
Entalpia de vaporització
347 kJ/mol
Capacitat tèrmica específica
0,449 J/g·K
Abundància a l'escorça terrestre
6,3%
Abundància a l'univers
0,11%
Crèdits de les imatges: Wikimedia Commons (Alchemist-hp)
Pure iron chips, electrolytically refined, as well as a high purity iron cube for comparison
Número CAS
7439-89-6
Número CID de PubChem
23925
Propietats Atòmiques
Radi atòmic
126 pm
Radi covalent
132 pm
Electronegativitat
1,83 (Escala de Pauling)
Potencial d'ionització
7,9024 eV
Volum atòmic
7,1 cm3/mol
Conductivitat tèrmica
0,802 W/cm·K
Estats d'oxidació
-2, -1, 1, 2, 3, 4, 5, 6, 7, 8
Aplicacions
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
Isòtops
Isòtops estables
54Fe, 56Fe, 57Fe, 58FeIsòtops inestables
45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 55Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe, 72Fe