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Fe - Iron - TRANSITION METAL
Synthetic
Radioactive
Liquid
Gaseous

Electronic configuration diagram
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 |
Mineral | Hardness | Density | Formula |
Abswurmbachite | 6.50 / 6.50 | 4.96 | Cu2+Mn3+6O8(SiO4) |
Achalaite | (Fe2+,Mn)(Ti,Fe3+,Ta)(Nb,Ta)2O8 | ||
Achávalite | 2.50 / 2.50 | 6.53 | FeSe |
Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 | ||
Actinolite | 5.50 / 5.50 | 2.98 | Ca2(Mg4.5-2.5Fe2+0.5-2.5)S=5Si8O22(OH)2 |
Adachiite | CaFe2+3Al6(Si5AlO18)(BO3)3(OH)3(OH) | ||
Adranosite-(Fe) | 2.20 | (NH4)4NaFe3+2(SO4)4Cl(OH)2 | |
Aegirine | 6.00 / 6.50 | 3.50 | NaFe3+Si2O6 |
Aegirine-augite | 6.00 / 6.00 | 3.40 | (Ca,Na)(Fe3+,Mg,Fe2+)Si2O6 |
Aenigmatite | 5.00 / 6.00 | 3.74 | Na4(Fe2+10Ti2)O4[Si12O36] |
Aerinite | 3.00 / 3.00 | 2.48 | (Ca,Na)6(Fe3+,Fe2+,Mg,Al)4(Al,Mg)6[Si12O36(OH)12](CO3)·12H2O |
Aeschynite-(Ce) | 5.00 / 6.00 | 5.19 | (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 |
Aeschynite-(Y) | 5.00 / 6.00 | 4.85 | (Y,Ca,Th)(Ti,Nb)2(O,OH)6 |
Agardite-(Ce) | 3.00 / 3.00 | 3.72 | Cu2+6Ce(AsO4)3(OH)6·3H2O |
Aheylite | 5.00 / 6.00 | 2.85 | Fe2+Al6(PO4)4(OH)8·4H2O |
Ahrensite | 4.14 | Fe2SiO4 | |
Akaganeite | 3.00 | (Fe3+,Ni2+)8(OH,O)16Cl1.25·nH2O | |
Akatoreite | 6.00 / 6.00 | 3.48 | Mn2+9Al2Si8O24(OH)8 |
Akimotoite | MgSiO3 | ||
Albertiniite | 2.46 | Fe2+(SO3)·3H2O | |
Alcaparrosaite | 4.00 / 4.00 | 2.81 | K3Ti4+Fe3+(SO4)4O·2H2O |
Aliettite | 1.00 / 2.00 | Ca0.2Mg6(Si,Al)8O20(OH)4·4H2O | |
Allabogdanite | 5.00 / 6.00 | 7.11 | (Fe,Ni)2P |
Allanite-(Ce) | 5.50 / 5.50 | 3.30 | CaCeAl2Fe2+(Si2O7)(SiO4)O(OH) |
Allanite-(La) | 6.00 / 6.00 | 3.93 | CaLaAl2Fe2+(Si2O7)(SiO4)O(OH) |
Allanite-(Nd) | CaNdAl2Fe2+(Si2O7)(SiO4)O(OH) | ||
Allanite-(Y) | 5.50 / 5.50 | 3.30 | CaYAl2Fe2+(Si2O7)(SiO4)O(OH) |
Allanpringite | 3.00 / 3.00 | 2.54 | Fe3+3(PO4)2(OH)3·5H2O |
Allendeite | 4.84 | Sc4Zr3O12 | |
Alloclasite | 5.00 / 5.00 | 6.17 | CoAsS |
Alluaudite | 5.00 / 5.50 | 3.45 | (Na,Ca)(Mn,Mg,Fe2+)(Fe3+,Mn2+)2(PO4)3 |
Almandine | 7.00 / 8.00 | 4.09 | Fe2+3Al2(SiO4)3 |
Almarudite | 6.00 / 6.00 | 2.71 | K(Na)2(Mn,Fe,Mg)2(Be,Al)3Si12O30 |
Almeidaite | PbZn2(Mn,Y)(Ti,Fe3+)18O36(OH,O)2 | ||
Alpersite | 2.50 / 2.50 | (Mg,Cu2+)SO4·7H2O | |
Alsakharovite-Zn | 5.00 / 5.00 | 2.90 | NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O |
Alumino-ferrobarroisite | NaCa[Fe2+3Al2](Si7Al)O22(OH)2 | ||
Alumino-ferrohornblende | Ca2Fe2+4Al(Si7Al)O22(OH)2 | ||
Alumino-ferrotschermakite | Ca2[Fe2+3Al2](Si6Al2)O22(OH)2 | ||
Alumino-ferrowinchite | NaCa(Fe2+,Al)5Si8O22(OH)2 | ||
Alumino-magnesiotaramite | Na2CaMg3Al2(Si6Al2)O22(OH)2 | ||
Aluminoceladonite | KMgAlSi4O10(OH)2 | ||
Aluminocerite-(Ce) | 5.00 / 5.00 | 4.68 | (Ce,Ca)9Al(SiO4)3(SiO3OH)4(OH)3 |
Aluminocopiapite | 2.50 / 3.00 | 2.00 | (Al,Mg)Fe3+4(SO4)6(OH,O)2·20H2O |
Aluminocoquimbite | 2.04 | AlFe(SO4)3·9H2O | |
Aluminokatophorite | 5.00 / 6.00 | Na2CaFe2+4Al(Si7Al)O22(OH)2 | |
Aluminomagnesiohulsite | 6.00 / 6.00 | 3.84 | Mg2AlO2(BO3) |
Alumoåkermanite | 4.00 / 5.00 | 3.00 | (Ca,Na)2(Al,Mg,Fe2+)(Si2O7) |
Amakinite | 3.50 / 4.00 | 2.93 | Fe2+(OH)2 |
Amarantite | 2.50 / 2.50 | 2.19 | Fe3+2O(SO4)2·7H2O |
Amarillite | 2.50 / 3.00 | 2.19 | NaFe3+(SO4)2·6H2O |
Ammoniojarosite | 3.50 / 4.50 | 3.02 | NH4Fe3+3(SO4)2(OH)6 |
Ammoniomagnesiovoltaite | (NH4)2Mg5Fe3+3Al(SO4)12·18H2O | ||
Anandite | 3.00 / 4.00 | 3.94 | BaFe2+3(Si3Fe3+)O10S(OH) |
Anapaite | 3.00 / 4.00 | 2.80 | Ca2Fe2+(PO4)2·4H2O |
Andradite | 6.50 / 7.00 | 3.70 | Ca3Fe3+2(SiO4)3 |
Andrémeyerite | 5.50 / 5.50 | 4.15 | BaFe2+2Si2O7 |
Andreyivanovite | FeCrP | ||
Angarfite | 2.50 / 2.50 | 2.77 | NaFe3+5(PO4)4(OH)4·4H2O |
Angelellite | 5.50 / 5.50 | 4.87 | Fe3+4O3(AsO4)2 |
Ankerite | 3.50 / 4.00 | 3.00 | CaFe2+(CO3)2 |
Ankinovichite | 2.50 / 3.00 | 2.48 | NiAl4(V5+O3)2(OH)12·2H2O |
Annite | 2.50 / 3.00 | 3.17 | KFe2+3AlSi3O10(OH)2 |
Annivite | Cu10(Fe,Zn)2Bi4S13 | ||
Antigorite | 3.50 / 4.00 | 2.50 | Mg3Si2O5(OH)4 |
Antitaenite | (Ni,Fe) | ||
Anzaite-(Ce) | 5.05 | Ce4Fe2+Ti6O18(OH)2 | |
Apuanite | 4.00 / 5.00 | 5.33 | Fe2+Fe3+4Sb3+4O12S |
Arakiite | 3.00 / 4.00 | ZnMn2+12Fe3+2As3+O3(As5+O4)2(OH)23 | |
Arcubisite | Ag6CuBiS4 | ||
Ardennite-(As) | 6.00 / 7.00 | 3.62 | Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6 |
Ardennite-(V) | 6.00 / 7.00 | 3.55 | Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 |
Arfvedsonite | 5.50 / 6.00 | 3.44 | NaNa2(Fe2+4Fe3+)Si8O22(OH)2 |
Argentojarosite | 3.50 / 4.50 | 3.66 | AgFe3+3(SO4)2(OH)6 |
Argentopentlandite | 3.50 / 3.50 | 4.00 | Ag(Fe,Ni)8S8 |
Argentopyrite | 3.50 / 4.00 | 4.25 | AgFe2S3 |
Argentotennantite | 3.50 / 3.50 | 5.00 | Ag6Cu4(Fe,Zn)2As4S13 |
Argentotetrahedrite | Ag10(Fe,Zn)2Sb4S13 | ||
Armalcolite | 6.00 / 6.00 | 4.00 | (Mg,Fe2+)Ti2O5 |
Armbrusterite | 3.50 / 3.50 | 2.78 | Na6K5Mn3+Mn2+14[Si9O22]4(OH)10·4H2O |
Arnhemite | 2.33 | K4Mg2(P2O7)2·5H2O | |
Arrojadite-(BaFe) | 3.54 | BaFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 | |
Arrojadite-(BaNa) | BaNa3(NaCa)Fe2+13Al(PO4)11(PO3OH)(OH) | ||
Arrojadite-(KFe) | 5.00 / 5.00 | 3.50 | (KNa)Fe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
Arrojadite-(KNa) | KNa3(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 | ||
Arrojadite-(NaFe) | |||
Arrojadite-(PbFe) | 4.00 / 5.00 | PbFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 | |
Arrojadite-(SrFe) | SrFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 | ||
Arsenbrackebuschite | 4.50 / 4.50 | 6.54 | Pb2(Fe3+,Zn)(AsO4)2(OH,H2O) |
Arseniopleite | 3.50 / 3.50 | 4.22 | (Ca,Na)NaMn2+(Mn2+,Mg,Fe2+)2(AsO4)3 |
Arseniosiderite | 1.50 / 1.50 | 3.50 | Ca2Fe3+3O2(AsO4)3·3H2O |
Arsenoflorencite-(Nd) | 3.50 / 3.50 | 4.05 | NdAl3(AsO4)2(OH)6 |
Arsenopyrite | 5.00 / 5.00 | 6.07 | FeAsS |
Arsmirandite | Na18Cu12Fe3+O8(AsO4)8Cl5 | ||
Arthurite | 3.00 / 4.00 | 3.02 | CuFe3+2(AsO4)2(OH)2·4H2O |
Arupite | 1.50 / 2.00 | 2.00 | Ni3(PO4)2·8H2O |
Askagenite-(Nd) | 6.00 / 6.00 | 4.38 | Mn2+NdAl2Fe3+(Si2O7)(SiO4)O2 |
Aspedamite | 3.00 / 4.00 | 4.07 | 12(Fe3+,Fe2+)3Nb4[Th(Nb,Fe3+)12O42](H2O,OH)12 |
Aspidolite | 2.00 / 3.00 | 2.89 | NaMg3(Si3Al)O10(OH)2 |