Ferro

Ferro (Fe)

chemical element with symbol Fe and atomic number 26
Atomic Number26
Atomic Weight55.845
Rhif màs56
Group8
Period4
Blockd
Proton26 p+
Niwtron30 n0
Electron26 e-
Animated Bohr model of Fe (Ferro)

Nodwedd Ffisegol

Atomic Radius
140 pm
molar volume
covalent radius
116 pm
Metallic Radius
117 pm
ionic radius
63 pm
Crystal Radius
77 pm
Van der Waals radius
204 pm
density
7.87 g/cm³
Atomic Radii Of The Elements: Ferro0102030405060708090100110120130140150160170180190200210pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
754 kJ/mol
electron affinity
ionization energy
7.9024678 eV/particle
ionization energy of Fe (Ferro)
enthalpy of vaporization
340 kJ/mol
enthalpy of fusion
13.8 kJ/mol
standard enthalpy of formation
415.5 kJ/mol
Electron
plisgyn yr electron2, 8, 14, 2
Bohr model: Fe (Ferro)
valence electron2
Lewis structure: Fe (Ferro)
trefn yr electronnau[Ar] 3d6 4s2
1s2 2s2 2p6 3s2 3p6 3d6 4s2
Enhanced Bohr model of Fe (Ferro)
Orbital Diagram of Fe (Ferro)
Cyflwr ocsidiad-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7
Electronegatifedd
1.83
Electrophilicity Index
1.045904228706801 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
3,134.15 K
Melting Point
1,811.15 K
critical pressure
critical temperature
9,340.15 K
triple point
appearance
lliw
Gray
appearancelustrous metallic with a grayish tinge
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
80.4 W/(m K)
thermal expansion
0.0000118 1/K
molar heat capacity
Specific Heat Capacity
0.449 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
10 MS/m
Gwrthedd
0.00000009700000000001 m Ω
superconductivity
magnetism
typeferromagnetic
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
1,043 K
Néel temperature
strwythur
Crystal StructureBody Centered Cubic (BCC)
lattice constant
2.87 Å
Lattice Anglesπ/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
4 MPa
bulk modulus
170 GPa
shear modulus
82 GPa
Young's modulus
211 GPa
Poisson's ratio
0.29
speed of sound
4,910 m/s
classification
CategoryTransition metals, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number71
Mendeleev Number59
Pettifor Number61
Geochemical Classmajor
Goldschmidt classificationsiderophile

other

Gas Basicity
731.1 kJ/mol
polarizability
62 ± 4 a₀
C6 Dispersion Coefficient
482 a₀
allotrope
Neutron cross section
2.56
Neutron Mass Absorption
0.0015
quantum number5D4
space group229 (Im_3m)

Isotopes of Iron

Stable Isotopes3
Unstable Isotopes29
Natural Isotopes4
Isotopic Composition5691.75%5691.75%545.85%545.85%572.12%572.12%580.28%580.28%

45Fe

Rhif màs45
neutron number19
relative atomic mass
45.015467 ± 0.000304 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.5 ± 0.2 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1996
parity+

decay modeintensity
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

Rhif màs46
neutron number20
relative atomic mass
46.001299 ± 0.000322 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
13 ± 2 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1992
parity+

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

47Fe

Rhif màs47
neutron number21
relative atomic mass
46.992346 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21.9 ± 0.2 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1992
parity-

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

48Fe

Rhif màs48
neutron number22
relative atomic mass
47.980667 ± 0.000099 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
45.3 ± 0.6 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1987
parity+

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

49Fe

Rhif màs49
neutron number23
relative atomic mass
48.973429 ± 0.000026 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
64.7 ± 0.3 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1970
parity-

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

50Fe

Rhif màs50
neutron number24
relative atomic mass
49.962988 ± 0.000009 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
152 ± 0.6 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1977
parity+

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

51Fe

Rhif màs51
neutron number25
relative atomic mass
50.956855137 ± 0.000001501 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
305.4 ± 2.3 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1972
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

52Fe

Rhif màs52
neutron number26
relative atomic mass
51.948113364 ± 0.000000192 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.275 ± 0.008 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1948
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

53Fe

Rhif màs53
neutron number27
relative atomic mass
52.945305629 ± 0.000001792 Da
g-factor
-0.18571428571429 ± 0.0028571428571429
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.51 ± 0.02 m
spin7/2
nuclear quadrupole moment
dyddiad darganfod1938
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

54Fe

Rhif màs54
neutron number28
relative atomic mass
53.939608189 ± 0.000000368 Da
g-factor
0
natural abundance
5.845 ± 0.105
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1923
parity+

decay modeintensity
+ (double β+ decay)

55Fe

Rhif màs55
neutron number29
relative atomic mass
54.938291158 ± 0.00000033 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.7562 ± 0.0004 y
spin3/2
nuclear quadrupole moment
dyddiad darganfod1939
parity-

decay modeintensity
ϵ (electron capture)100%

56Fe

Rhif màs56
neutron number30
relative atomic mass
55.934935537 ± 0.000000287 Da
g-factor
0
natural abundance
91.754 ± 0.106
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1923
parity+

57Fe

Rhif màs57
neutron number31
relative atomic mass
56.93539195 ± 0.000000287 Da
g-factor
natural abundance
2.119 ± 0.029
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1935
parity-

58Fe

Rhif màs58
neutron number32
relative atomic mass
57.933273575 ± 0.000000339 Da
g-factor
0
natural abundance
0.282 ± 0.012
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1935
parity+

59Fe

Rhif màs59
neutron number33
relative atomic mass
58.934873492 ± 0.000000354 Da
g-factor
-0.22386666666667 ± 0.00026666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
44.5 ± 0.012 d
spin3/2
nuclear quadrupole moment
dyddiad darganfod1938
parity-

decay modeintensity
β (β decay)100%

60Fe

Rhif màs60
neutron number34
relative atomic mass
59.934070249 ± 0.000003656 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.62 ± 0.04 My
spin0
nuclear quadrupole moment
0
dyddiad darganfod1957
parity+

decay modeintensity
β (β decay)100%

61Fe

Rhif màs61
neutron number35
relative atomic mass
60.936746241 ± 0.0000028 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.98 ± 0.06 m
spin3/2
nuclear quadrupole moment
dyddiad darganfod1957
parity-

decay modeintensity
β (β decay)100%

62Fe

Rhif màs62
neutron number36
relative atomic mass
61.936791809 ± 0.000003 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
68 ± 2 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1975
parity+

decay modeintensity
β (β decay)100%

63Fe

Rhif màs63
neutron number37
relative atomic mass
62.940272698 ± 0.000004618 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.1 ± 0.6 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1980
parity-

decay modeintensity
β (β decay)100%

64Fe

Rhif màs64
neutron number38
relative atomic mass
63.940987761 ± 0.000005386 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2 ± 0.2 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1980
parity+

decay modeintensity
β (β decay)100%

65Fe

Rhif màs65
neutron number39
relative atomic mass
64.945015323 ± 0.000005487 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
805 ± 10 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1980
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

66Fe

Rhif màs66
neutron number40
relative atomic mass
65.946249958 ± 0.0000044 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
467 ± 29 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1985
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

67Fe

Rhif màs67
neutron number41
relative atomic mass
66.95093 ± 0.0000041 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
394 ± 9 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1985
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

68Fe

Rhif màs68
neutron number42
relative atomic mass
67.952875 ± 0.000207 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
188 ± 4 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1985
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0%

69Fe

Rhif màs69
neutron number43
relative atomic mass
68.957918 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
162 ± 7 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1992
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

70Fe

Rhif màs70
neutron number44
relative atomic mass
69.960397 ± 0.000322 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
61.4 ± 0.7 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

71Fe

Rhif màs71
neutron number45
relative atomic mass
70.965722 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
34.3 ± 2.6 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

72Fe

Rhif màs72
neutron number46
relative atomic mass
71.968599 ± 0.000537 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17 ± 1 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

73Fe

Rhif màs73
neutron number47
relative atomic mass
72.974246 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12.9 ± 1.6 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

74Fe

Rhif màs74
neutron number48
relative atomic mass
73.977821 ± 0.000537 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5 ± 5 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

75Fe

Rhif màs75
neutron number49
relative atomic mass
74.984219 ± 0.000644 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin9/2
nuclear quadrupole moment
dyddiad darganfod2013
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

76Fe

Rhif màs76
neutron number50
relative atomic mass
75.988631 ± 0.000644 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod2017
parity+

decay modeintensity
β (β decay)
Iron electrolytic and 1cm3 cube

hanes

darganfyddwr neu ddyfeisiwrKnown to the ancients.
man darganfod
dyddiad darganfod
geirdarddiadAnglo-Saxon: iron; symbol from Latin: ferrum (iron).
ynganiadEYE-ern (Saesneg)

source

Abundance
Abundance in Earth's crust
56,300 mg/kg
natural abundance (cefnfor)
0.002 mg/L
natural abundance (corff dynol)
0.006 %
natural abundance (Awyrfaen)
22 %
natural abundance (Haul)
0.1 %
Abundance in Universe
0.11 %

Nuclear Screening Constants

1s0.619
2p3.9112
2s7.401
3d14.8202
3p13.2221
3s12.3239
4s20.566