Iron (Fe)

General Properties

Symbol Fe
Atomic Number 26
Atomic Weight 55.845
Group
8 (iron family)
VIIIA (IUPAC), VIII (CAS)
Solid, Ferromagnetic, Conductor, Transition Metal, Metal, Stable, Natural
Period 4
Block d

Physical Properties

Density 7.86 g/cm3
Atomic Volume 7.1 cm3/mole
Atomic Radius 1.26 angstroms
Covalent Radius 125 pm
Crust Abundance 6.3%
Crystal Structure Cubic: Body centered
Color Gray

Energy

Electronegativity 1.8 (Pauling Scale)
Electron Affinity 15.7 kJ/mol
1st Ionization Energy 763 kJ/mol
2nd Ionization Energy 1561.9 kJ/mol
3rd Ionization Energy 2957 kJ/mol
4th Ionization Energy 5290 kJ/mol
5th Ionization Energy 7240 kJ/mol
6th Ionization Energy 9560 kJ/mol
7th Ionization Energy 12060 kJ/mol
8th Ionization Energy 14580 kJ/mol
9th Ionization Energy 22540 kJ/mol
10th Ionization Energy 25290 kJ/mol
11th Ionization Energy 28000 kJ/mol
12th Ionization Energy 31920 kJ/mol
13th Ionization Energy 34830 kJ/mol
14th Ionization Energy 37840 kJ/mol
15th Ionization Energy 44100 kJ/mol
16th Ionization Energy 47206 kJ/mol
17th Ionization Energy 122200 kJ/mol
18th Ionization Energy 131000 kJ/mol
19th Ionization Energy 140500 kJ/mol
20th Ionization Energy 152600 kJ/mol
21st Ionization Energy 163000 kJ/mol
22nd Ionization Energy 173600 kJ/mol
23rd Ionization Energy 188100 kJ/mol
24th Ionization Energy 195200 kJ/mol
25th Ionization Energy 851800 kJ/mol
26th Ionization Energy 895161 kJ/mol
Specific Heat Capacity 0.449 J g−1 K−1
Thermal Conductivity 80.2 W·m−1·K−1

Electrons & Oxidation

Oxidation States +3,2
Electrons Per Shell 2 8 14 2
Electron Configuration [Ar] 4s2 3d6
1s2 2s2 2p6 3s2 3p6 4s2 3d6
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿ 
↿ 
↿ 
↿ 
4s
↿⇂
4p
 
 
 
4d
 
 
 
 
 
4f
 
 
 
 
 
 
 

Nuclear

Radioactive No

Media

Planetary Bohr Model of Iron (Fe)
Description
Malleable, ductile, silvery-white metal. Fourth most abundant element in the earth's crust (56,300 ppm). Ninth most abundant element in the universe.
Uses
Used in steel and other alloys. Essential for humans. It is the chief constituent of hemoglobin which carries oxygen in blood vessels. Its oxides are used in magnetic tapes and disks.
Sources
Obtained from iron ores. Pure metal produced in blast furnaces by layering limestone, coke and iron ore and forcing hot gasses into the bottom. This heats the coke red hot and the iron is reduced from its oxides and liquified where it flows to the bottom
Pronounciation (English)
EYE-ern

Translations

Afrikaans Yster
Aragonese Fierro
العربية حديد
Armãneashte Heru
asturianu Fierro
azərbaycan dili Dəmir
български Желязо
বাংলা আয়রন
brezhoneg Houarn
bosanski Željezo, ²Gvožđe
Byelorussian Жалеза
Cebuano Puthaw
čeština Železo
Chuvash Тимĕр
Cymraeg Ferro
dansk Jern
Deutsch Eisen
Ελληνικά Σιδηρος
English Iron
esperanto Fero
español Hierro
eesti Raud
euskara Burdina
فارسی آهن
suomi Rauta
føroyskt Jarn
français Fer
furlan Fier
West-Frysk Izer
Gaeilge Iarann
Gàidhlig Iarann (Iarrnaig)
galego Ferro
ગુજરાતી લોખંડ
Gaelg Yiarn
Hakka Chinese Thiet
עברית ברזל
हिन्दी लोहा
hrvatski Željezo
magyar Vas
հայերեն Երկաթ
Indonesia Besi
íslenska Járn
italiano Ferro
日本語
ქართული რკინა
کٲشُر Żelazło
қазақ тілі Темір
한국어
Kurdish Hesin
Komi Кӧрт
kernewek Horn
кыргызча Темир
Latin Ferrum
Lëtzebuergesch Eisen
Lombard Fèr
lingála Ebendé
lietuvių Geležis
latviešu Dzelzs
Mari Кӱртньӧ
Maori Rino
македонски Железо
മലയാളം ഇരുമ്പ്
монгол Төмөр
Мокшан Кишни, Кшни
Bahasa Melayu Besi
Malti Ħadid
Nahuatl Tlīltic tepoztli
Nederlands IJzer
norsk Jern
Occitan Fèrre
ирон Æфсæйнаг
polski Żelazo
português Ferro
Runasimi Khillay
română Fier
русский Железо
slovenčina Železo
slovenščina Železo
Samoan Isri
Samogitian Geležis
shqip Hekur
српски Гвожће
Southern Sotho Tshepe
svenska Järn
Kiswahili Feri, Chuma
தமிழ் இரும்பு
Tajik Оҳан
ไทย เหล็ก
Türkçe Demir
ئۇيغۇرچە تۆمۈر
українська Залізо
o‘zbek Temir
Tiếng Việt Sắt
Võro Raud
中文

History

Discovered In
Discovered By
Discovered At
Word Origin
From the Anglo-Saxon word "iron" or "iren" (the origin of the symbol Fe comes from the Latin word "ferrum" meaning "iron").