Željezo (Fe)

chemical element with symbol Fe and atomic number 26

Atomski broj	26
Relativna atomska masa	55.845
Maseni broj	56

Skupina	8
Perioda	4
Blok	d

proton	26 p⁺
neutron	30 n⁰
elektron	26 e^-

Animated Bohrov model atoma of Fe (Željezo)

Physical Property

Atomski Radijus	140 pm 237 pm
Molni volumen	7,1 cm³/mol
Kovalentni Radijus	116 pm 109 pm 102 pm 140 pm 142 pm
Metallic Radius	117 pm 126 pm
Ionski radijus	63 pm 64 pm 61 pm 78 pm 92 pm 49 pm 58 pm 55 pm 64,5 pm 78 pm 58,5 pm 25 pm
Crystal Radius	77 pm 78 pm 75 pm 92 pm 106 pm 63 pm 72 pm 69 pm 78,5 pm 92 pm 72,5 pm 39 pm
Van der Waals radius	205 pm 204 pm 223 pm 291,2 pm
gustoća	7,87 g/cm³ 6.980 kg/m³

Kemijsko Svojstvo

energija

proton affinity	754 kJ/mol
Elektronski afinitet	0,151 eV/particle
ionization energy	7,9024678 eV/particle 16,1992 eV/particle 30,651 eV/particle 54,91 eV/particle 75 eV/particle 98,985 eV/particle 125 eV/particle 151,06 eV/particle 233,6 eV/particle 262,1 eV/particle 290,9 eV/particle 330,81 eV/particle 361 eV/particle 392,2 eV/particle 456,2 eV/particle 489,312 eV/particle 1.262,7 eV/particle 1.357,8 eV/particle 1.460 eV/particle 1.575,6 eV/particle 1.687 eV/particle 1.798,43 eV/particle 1.950,4 eV/particle 2.045,759 eV/particle 8.828,1875 eV/particle 9.277,681 eV/particle

Toplina isparivanja	340 kJ/mol
toplina taljenja	13,8 kJ/mol
standard enthalpy of formation	415,5 kJ/mol
elektron

Elektronska ljuska	2, 8, 14, 2

valence electron	2 ⓘ

electron configuration	[Ar] 3d⁶ 4s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶ 4s²

Oksidacijski broj	-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7
Elektronegativnost	10,64 eV/particle 0.1392532 1.83
Electrophilicity Index	1,045904228706801 eV/particle
fundamental state of matter

agregatno stanje	Čvrsto
gaseous state of matter
Vrelište	3.134,15 K
Talište	1.811,15 K
critical pressure
critical temperature	9.340,15 K
Trojna točka
appearance
boja	Siva #ffa500 #e06633 #e06633
appearance	lustrous metallic with a grayish tinge
Indeks prelamanja
thermodynamic material property
Toplinska vodljivost	80,4 W/(m K)
Toplinsko istezanje	0,0000118 1/K
molar heat capacity	25,1 J/(mol K)
Specifični toplinski kapacitet	0,449 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	10 MS/m
Električna otpornost i provodnost	0,00000009700000000001 m Ω
Supravodljivost
Magnetizam
type	ferromagnetic
Magnetna susceptibilnost (Mass)
Magnetna susceptibilnost (Molar)
Magnetna susceptibilnost (Volume)
magnetic ordering
Curieva temperatura	1.043 K
Néel temperature
struktura
Kristalna struktura	Kubna prostorno centrirana (BCC)
lattice constant	2,87 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
Tvrdoća	490 MPa 4 MPa 608 MPa
bulk modulus	170 GPa
shear modulus	82 GPa
Youngov modul elastičnosti	211 GPa
Poissonov omjer	0,29
brzina zvuka	4.910 m/s
classification
Kategorija	Prijelazni metali, Transition metals
CAS Group	VIIIA
IUPAC Group	VIII
Glawe Number	71
Mendeleev Number	59
Pettifor Number	61
Geochemical Class	major
Goldschmidt classification	siderophile

other

Gas Basicity	731,1 kJ/mol
polarizability	62 ± 4 a₀
C6 Dispersion Coefficient	482 a₀ 548 a₀
allotrope
Nuklearni udarni presjek	2,56
Neutron Mass Absorption	0,0015
Kvantni brojevi	5D4
space group	229 (Im_3m)

Isotopes of Iron

Stabilni izotopi	3
Nestabilni izotopi	29
Natural Isotopes	4

⁴⁵Fe

Maseni broj	45
neutron number	19
Relativna atomska masa	45,015467 ± 0,000304 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,5 ± 0,2 ms
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1996
Parnost	+

decay mode	intensity
2p (2-proton emission)	70%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	30%
β⁺ p (β⁺-delayed proton emission)	18.9%
2p (2-proton emission)	7.8%

⁴⁶Fe

Maseni broj	46
neutron number	20
Relativna atomska masa	46,001299 ± 0,000322 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	13 ± 2 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1992
Parnost	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	78.7%
2p (2-proton emission)

⁴⁷Fe

Maseni broj	47
neutron number	21
Relativna atomska masa	46,992346 ± 0,000537 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	21,9 ± 0,2 ms
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1992
Parnost	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	88.4%

⁴⁸Fe

Maseni broj	48
neutron number	22
Relativna atomska masa	47,980667 ± 0,000099 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	45,3 ± 0,6 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1987
Parnost	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	15.3%

⁴⁹Fe

Maseni broj	49
neutron number	23
Relativna atomska masa	48,973429 ± 0,000026 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	64,7 ± 0,3 ms
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1970
Parnost	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	56.7%

⁵⁰Fe

Maseni broj	50
neutron number	24
Relativna atomska masa	49,962988 ± 0,000009 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	152 ± 0,6 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1977
Parnost	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	0%

⁵¹Fe

Maseni broj	51
neutron number	25
Relativna atomska masa	50,956855137 ± 0,000001501 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	305,4 ± 2,3 ms
spin	5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1972
Parnost	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵²Fe

Maseni broj	52
neutron number	26
Relativna atomska masa	51,948113364 ± 0,000000192 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	8,275 ± 0,008 h
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1948
Parnost	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵³Fe

Maseni broj	53
neutron number	27
Relativna atomska masa	52,945305629 ± 0,000001792 Da
g-factor	−0,18571428571429 ± 0,0028571428571429
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	8,51 ± 0,02 m
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1938
Parnost	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵⁴Fe

Maseni broj	54
neutron number	28
Relativna atomska masa	53,939608189 ± 0,000000368 Da
g-factor	0
natural abundance	5,845 ± 0,105
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1923
Parnost	+

decay mode	intensity
2β⁺ (double β⁺ decay)

⁵⁵Fe

Maseni broj	55
neutron number	29
Relativna atomska masa	54,938291158 ± 0,00000033 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,7562 ± 0,0004 y
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1939
Parnost	-

decay mode	intensity
ϵ (electron capture)	100%

⁵⁶Fe

Maseni broj	56
neutron number	30
Relativna atomska masa	55,934935537 ± 0,000000287 Da
g-factor	0
natural abundance	91,754 ± 0,106
radioaktivnost	stable isotope
Vrijeme poluraspada	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1923
Parnost	+

⁵⁷Fe

Maseni broj	57
neutron number	31
Relativna atomska masa	56,93539195 ± 0,000000287 Da
g-factor
natural abundance	2,119 ± 0,029
radioaktivnost	stable isotope
Vrijeme poluraspada	Not Radioactive ☢️
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1935
Parnost	-

⁵⁸Fe

Maseni broj	58
neutron number	32
Relativna atomska masa	57,933273575 ± 0,000000339 Da
g-factor	0
natural abundance	0,282 ± 0,012
radioaktivnost	stable isotope
Vrijeme poluraspada	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1935
Parnost	+

⁵⁹Fe

Maseni broj	59
neutron number	33
Relativna atomska masa	58,934873492 ± 0,000000354 Da
g-factor	−0,22386666666667 ± 0,00026666666666667
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	44,5 ± 0,012 d
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1938
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶⁰Fe

Maseni broj	60
neutron number	34
Relativna atomska masa	59,934070249 ± 0,000003656 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,62 ± 0,04 My
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1957
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶¹Fe

Maseni broj	61
neutron number	35
Relativna atomska masa	60,936746241 ± 0,0000028 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5,98 ± 0,06 m
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1957
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶²Fe

Maseni broj	62
neutron number	36
Relativna atomska masa	61,936791809 ± 0,000003 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	68 ± 2 s
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1975
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶³Fe

Maseni broj	63
neutron number	37
Relativna atomska masa	62,940272698 ± 0,000004618 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	6,1 ± 0,6 s
spin	5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1980
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶⁴Fe

Maseni broj	64
neutron number	38
Relativna atomska masa	63,940987761 ± 0,000005386 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2 ± 0,2 s
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1980
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶⁵Fe

Maseni broj	65
neutron number	39
Relativna atomska masa	64,945015323 ± 0,000005487 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	805 ± 10 ms
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1980
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁶⁶Fe

Maseni broj	66
neutron number	40
Relativna atomska masa	65,946249958 ± 0,0000044 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	467 ± 29 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1985
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁶⁷Fe

Maseni broj	67
neutron number	41
Relativna atomska masa	66,95093 ± 0,0000041 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	394 ± 9 ms
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1985
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁶⁸Fe

Maseni broj	68
neutron number	42
Relativna atomska masa	67,952875 ± 0,000207 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	188 ± 4 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1985
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0%

⁶⁹Fe

Maseni broj	69
neutron number	43
Relativna atomska masa	68,957918 ± 0,000215 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	162 ± 7 ms
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1992
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷⁰Fe

Maseni broj	70
neutron number	44
Relativna atomska masa	69,960397 ± 0,000322 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	61,4 ± 0,7 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1997
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁷¹Fe

Maseni broj	71
neutron number	45
Relativna atomska masa	70,965722 ± 0,000429 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	34,3 ± 2,6 ms
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1997
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷²Fe

Maseni broj	72
neutron number	46
Relativna atomska masa	71,968599 ± 0,000537 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	17 ± 1 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1997
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷³Fe

Maseni broj	73
neutron number	47
Relativna atomska masa	72,974246 ± 0,000537 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	12,9 ± 1,6 ms
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	2010
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷⁴Fe

Maseni broj	74
neutron number	48
Relativna atomska masa	73,977821 ± 0,000537 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5 ± 5 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	2010
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷⁵Fe

Maseni broj	75
neutron number	49
Relativna atomska masa	74,984219 ± 0,000644 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	2013
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷⁶Fe

Maseni broj	76
neutron number	50
Relativna atomska masa	75,988631 ± 0,000644 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	2017
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)

povijest

otkrio/izumio	Known to the ancients.
location of discovery
vrijeme otkrića ili izuma
Etimologija	Anglo-Saxon: iron; symbol from Latin: ferrum (iron).
pronunciation	EYE-ern (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori	56.300 mg/kg
natural abundance (ocean)	0,002 mg/L
natural abundance (tijelo)	0,006 %
natural abundance (meteoroid)	22 %
natural abundance (Sunce)	0,1 %
Zastupljenost u svemiru	0,11 %

Nuclear Screening Constants

1	s	0.619
2	p	3.9112
2	s	7.401
3	d	14.8202
3	p	13.2221
3	s	12.3239
4	s	20.566

Željezo on ChemicalAid

AEDA subject keyword ID	17568
Art & Architecture Thesaurus ID	300011002
Australian Educational Vocabulary ID	scot/2214
BNCF Thesaurus ID	474
BNF	11975665r
Biblioteca Nacional de España ID	XX524497
Brockhaus Enzyklopädie online ID	Hola
Brockhaus Enzyklopädie online ID	eisen-20
CAS registarski broj	7439-89-6
ChEBI ID	18248
ChemSpider ID	22368
CosIng number	83503
DSSTOX compound identifier	DTXCID3023710
DSSTox substance ID	DTXSID5043710
Den Store Danske ID	jern
Drugbank ID	01592
ECHA Substance Infocard ID	100.028.270
Encyclopedie berbere keyword ID	2031
Encyclopædia Universalis ID	fer-l-element-metallique
Encyclopædia Universalis ID	fer-vue-d-ensemble
EuroVoc ID	981
Europeana Fashion Vocabulary ID	10552
Freebase ID	/m/025rw19
French Vikidia ID	Fer
GND identifikator	4014002-7
Golden ID	Iron-RM8V
Great Aragonese Encyclopedia ID	6825
Great Russian Encyclopedia Online ID	2625019
Gujarati Vishwakosh entry	આયર્ન-લોહ
HDS	026231
HSDB ID	604
Human Metabolome Database ID	HMDB0015531
ID oznaka teme na Quori	Iron
ID oznaka u mrežnoj enciklopediji Britannici	science/iron-chemical-element
InChI	InChI=1S/Fe
InChIKey	XEEYBQQBJWHFJM-UHFFFAOYSA-N
Italian Vikidia ID	Ferro
KBpedia ID	Iron
KEGG ID	C00023
Klexikon article ID	Eisen
Krugosvet article	nauka_i_tehnika/himiya/ZHELEZO.html
LCCN	sh85068131
Language of Bindings ID	2416
Latvian National Encyclopedia Online ID	149532
LiverTox ID	Iron
MeSH ID	D007501
MeSH concept ID	M0011718
NALT ID	33434
NDF-RT ID	N0000146032
NDL ID	00572915
NE.se ID	järn
NKCR broj	ph127955
Namuwiki ID	철(원소)
National Library of Israel J9U ID	987007560416405171
Nomisma ID	fe
Open Food Facts ingredient ID	iron
PACTOLS thesaurus ID	pcrtJWWucnutA0
PSH ID	5775
Probes And Drugs ID	PD009463
PubChem ID	23925
RKD thesaurus ID	37450
RxNorm ID	90176
Römpp online ID	RD-05-00418
STW Thesaurus for Economics ID	14281-3
Spanish Cultural Heritage thesauri ID	materias/1000924
Spanish Vikidia ID	Hierro
Store norske leksikon ID	jern
Treccani ID	ferro
UK Archival Thesaurus ID	f2/mt225/4347/3178
UMLS CUI	C0302583
UNESCO Thesaurus ID	concept10788
UNII	E1UOL152H7
USGS Thesaurus ID	1483
WikiSkripta ID	7294
Wolfram Language entity code	Entity["Mineral", "Iron"]
WordNet 3.1 Synset ID	14666595-n
YSO ID	11738
ZVG number	8210
značenje prema OmegaWiki	2024

Željezo (Fe)

Physical Property

Kemijsko Svojstvo

other

Isotopes of Iron

45Fe

46Fe

47Fe

48Fe

49Fe

50Fe

51Fe

52Fe

53Fe

54Fe

55Fe

56Fe

57Fe

58Fe

59Fe

60Fe

61Fe

62Fe

63Fe

64Fe

65Fe

66Fe

67Fe

68Fe

69Fe

70Fe

71Fe

72Fe

73Fe

74Fe

75Fe

76Fe

povijest

source

Nuclear Screening Constants

⁴⁵Fe

⁴⁶Fe

⁴⁷Fe

⁴⁸Fe

⁴⁹Fe

⁵⁰Fe

⁵¹Fe

⁵²Fe

⁵³Fe

⁵⁴Fe

⁵⁵Fe

⁵⁶Fe

⁵⁷Fe

⁵⁸Fe

⁵⁹Fe

⁶⁰Fe

⁶¹Fe

⁶²Fe

⁶³Fe

⁶⁴Fe

⁶⁵Fe

⁶⁶Fe

⁶⁷Fe

⁶⁸Fe

⁶⁹Fe

⁷⁰Fe

⁷¹Fe

⁷²Fe

⁷³Fe

⁷⁴Fe

⁷⁵Fe

⁷⁶Fe