Iron is a chemical element with symbol Fe and atomic number 26. It is the fourth most abundant chemical element in the earth's crust and the second most abundant in the human body.

Iron is a soft and durable white-gray metal. It is harder than copper, but is more malleable and easier to work with.

Iron is most often found in its “iron” form in nature, but it is also produced as “pure iron”. Iron is used to make tools and weapons, as well as useful metal parts for many applications, including support structures, vehicles, and the building world.

Iron is also very important for the human body. It is necessary for the formation of red blood cells, which carry oxygen in the blood. Iron deficiency can lead to anemia, a condition characterized by weakness and fatigue.

Iron is also necessary for healthy growth and for the prevention of certain diseases. Iron-rich foods include beef, beans, almonds, and spinach. Iron supplements should be taken with caution and are usually only prescribed for people with anemia.

1535°
2750°

55.845

-2
-1
1
2
3
4
5
6

[Ar] 3d6 4s2

2
8
14
2

1.83

7.9024

Synthetic

Radioactive

Liquid

Gaseous

Electronic configuration diagram

Characteristics

Name	Iron
Number	26
Atomic	55.845
Symbol	Fe
Fusion	1535
Boiling	2750
Density	7.874
Period	4
Group	8

Discovery	0 Prehistoric
Abundance	56300
Radius	1.7
Electronegativity	1.83
Ionization	7.9024
Number of isotopes	10
Electronic configuration	[Ar] 3d6 4s2
Oxidation states	-2,-1,1,2,3,4,5,6
Electron by energy level	2,8,14,2

Minerals containing this element : 1568

Mineral	Hardness	Density
Abswurmbachite	6.50 / 6.50	4.96
Achalaite
Achávalite	2.50 / 2.50	6.53
Acmonidesite
Actinolite	5.50 / 5.50	2.98
Adachiite
Adranosite-(Fe)		2.20
Aegirine	6.00 / 6.50	3.50
Aegirine-augite	6.00 / 6.00	3.40
Aenigmatite	5.00 / 6.00	3.74
Aerinite	3.00 / 3.00	2.48
Aeschynite-(Ce)	5.00 / 6.00	5.19
Aeschynite-(Y)	5.00 / 6.00	4.85
Agardite-(Ce)	3.00 / 3.00	3.72
Aheylite	5.00 / 6.00	2.85
Ahrensite		4.14
Akaganeite		3.00
Akatoreite	6.00 / 6.00	3.48
Akimotoite
Albertiniite		2.46
Alcaparrosaite	4.00 / 4.00	2.81
Aliettite	1.00 / 2.00
Allabogdanite	5.00 / 6.00	7.11
Allanite-(Ce)	5.50 / 5.50	3.30
Allanite-(La)	6.00 / 6.00	3.93
Allanite-(Nd)
Allanite-(Y)	5.50 / 5.50	3.30
Allanpringite	3.00 / 3.00	2.54
Allendeite		4.84
Alloclasite	5.00 / 5.00	6.17
Alluaudite	5.00 / 5.50	3.45
Almandine	7.00 / 8.00	4.09
Almarudite	6.00 / 6.00	2.71
Almeidaite
Alpersite	2.50 / 2.50
Alsakharovite-Zn	5.00 / 5.00	2.90
Alumino-ferrobarroisite
Alumino-ferrohornblende
Alumino-ferrotschermakite
Alumino-ferrowinchite
Alumino-magnesiotaramite
Aluminoceladonite
Aluminocerite-(Ce)	5.00 / 5.00	4.68
Aluminocopiapite	2.50 / 3.00	2.00
Aluminocoquimbite		2.04
Aluminokatophorite	5.00 / 6.00
Aluminomagnesiohulsite	6.00 / 6.00	3.84
Alumoåkermanite	4.00 / 5.00	3.00
Amakinite	3.50 / 4.00	2.93
Amarantite	2.50 / 2.50	2.19
Amarillite	2.50 / 3.00	2.19
Ammoniojarosite	3.50 / 4.50	3.02
Ammoniomagnesiovoltaite
Anandite	3.00 / 4.00	3.94
Anapaite	3.00 / 4.00	2.80
Andradite	6.50 / 7.00	3.70
Andrémeyerite	5.50 / 5.50	4.15
Andreyivanovite
Angarfite	2.50 / 2.50	2.77
Angelellite	5.50 / 5.50	4.87
Ankerite	3.50 / 4.00	3.00
Ankinovichite	2.50 / 3.00	2.48
Annite	2.50 / 3.00	3.17
Annivite
Antigorite	3.50 / 4.00	2.50
Antitaenite
Anzaite-(Ce)		5.05
Apuanite	4.00 / 5.00	5.33
Arakiite	3.00 / 4.00
Arcubisite
Ardennite-(As)	6.00 / 7.00	3.62
Ardennite-(V)	6.00 / 7.00	3.55
Arfvedsonite	5.50 / 6.00	3.44
Argentojarosite	3.50 / 4.50	3.66
Argentopentlandite	3.50 / 3.50	4.00
Argentopyrite	3.50 / 4.00	4.25
Argentotennantite	3.50 / 3.50	5.00
Argentotetrahedrite
Armalcolite	6.00 / 6.00	4.00
Armbrusterite	3.50 / 3.50	2.78
Arnhemite		2.33
Arrojadite-(BaFe)		3.54
Arrojadite-(BaNa)
Arrojadite-(KFe)	5.00 / 5.00	3.50
Arrojadite-(KNa)
Arrojadite-(NaFe)
Arrojadite-(PbFe)	4.00 / 5.00
Arrojadite-(SrFe)
Arsenbrackebuschite	4.50 / 4.50	6.54
Arseniopleite	3.50 / 3.50	4.22
Arseniosiderite	1.50 / 1.50	3.50
Arsenoflorencite-(Nd)	3.50 / 3.50	4.05
Arsenopyrite	5.00 / 5.00	6.07
Arsmirandite
Arthurite	3.00 / 4.00	3.02
Arupite	1.50 / 2.00	2.00
Askagenite-(Nd)	6.00 / 6.00	4.38
Aspedamite	3.00 / 4.00	4.07
Aspidolite	2.00 / 3.00	2.89