Железо

26
Fe
Група
8
Периода
4
блок
d
Protons
Electrons
Neutrons
26
26
30
Општи Својства
Атомски број
26
Атомска тежина
55,845
Mass Number
56
Category
Преоден метал
Color
Gray
Radioactive
Не
From the Latin word ferrum
Кристална структура
Body Centered Cubic
History
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
Електронска конфигурација
[Ar] 3d6 4s2
Fe
The color of blood is due to the hemoglobin, an iron-containing protein
Физички Својства
Фаза
Solid
Густина
7,874 g/cm3
Точка на топење
1811,15 K | 1538 °C | 2800,4 °F
Точка на вриење
3134,15 K | 2861 °C | 5181,8 °F
Топлина на топење
13,8 kJ/mol
Топлина на испарување
347 kJ/mol
Specific Heat Capacity
0,449 J/g·K
Abundance in Earth's crust
6,3%
Abundance in Universe
0,11%
Pure
Кредити на слика: 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
Атомски Својства
Атомски полупречник
126 pm
Ковалентен полупречник
132 pm
Електронегативност
1,83 (Полингова скала)
Ionization Potential
7,9024 eV
Atomic Volume
7,1 cm3/mol
Thermal Conductivity
0,802 W/cm·K
Oxidation States
-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