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Iron Properties



Physical
0

Melting Point
1,535.00 °C 25

Boiling Point
2,750.00 °C 37

Hardness
0

Mohs Hardness
4.00 10

Brinell Hardness
200.00 MPa 40

Vickers Hardness
608.00 MPa 18

Optical Properties
0

Refractive Index
Not Available 0

Reflectivity
65.00 % 12

Speed of Sound
5,120.00 m/s 8

Allotropes
Yes 0

α Allotropes
Ferrite (alpha Iron) 0

β Allotropes
beta Iron 0

γ Allotropes
gamma Iron 0

Chemical
0

Chemical Formula
Fe 0

Isotopes
0

Known Isotopes
26 13

Electronegativity
0

Pauling Electronegativity
1.83 14

Sanderson Electronegativity
2.20 7

Allred Rochow Electronegativity
1.64 8

Mulliken-Jaffe Electronegativity
Not Available 0

Allen Electronegativity
1.80 12

Electropositivity
0

Pauling Electropositivity
2.17 40

Ionization Energies
0

1st Energy Level
762.50 kJ/mol 17

2nd Energy Level
1,561.90 kJ/mol 36

3rd Energy Level
2,957.00 kJ/mol 29

Electrochemical Equivalent
0.69 g/amp-hr 65

Electron Work Function
4.70 eV 10

Other Chemical Properties
Corrosion, Ionization, Solubility 0

Mechanical
0

Density
0

Density At Room Temperature
7.87 g/cm3 52

Density When Liquid (at m.p.)
6.98 g/cm3 35

Vapor Pressure
0

Vapor Pressure at 1000 K
0.00 (Pa) 28

Vapor Pressure at 2000 K
36.80 (Pa) 5

Tensile Strength
11,000.00 MPa 1

Viscosity
Not Available 0

Elasticity properties
0

Shear Modulus
82.00 GPa 11

Bulk Modulus
170.00 GPa 10

Young's Modulus
211.00 GPa 9

Poisson Ratio
0.29 15

Other Mechanical Properties
Ductile, Malleable, Weldable 0

Periodic Table
0

Symbol
Fe 0

Group Number
8 10

Period Number
4 4

Block
d block 0

Element Family
Transition Metal 0

Atomic
0

Atomic Number
26 80

Atomic Weight
55.85 amu 74

Atomic Volume
7.10 cm3/mol 61

Electron Configuration
[Ar] 3d6 4s2 0

Valence Electron Potential
67.00 (-eV) 20

Atom
0

Number of Protons
26 79

Number of Neutrons
30 60

Number of Electrons
26 79

Crystal Structure
Body Centered Cubic (BCC) 0

Crystal Lattice
BCC-Crystal-Structure-.jpg#100 0

Radius of an Atom
0

Atomic Radius
126.00 pm 48

Covalent Radius
132.00 pm 48

Van der Waals Radius
200.00 pm 28

Lattice Constant
286.65 pm 63

Lattice Angles
π/2, π/2, π/2 0

Lattice C/A Ratio
Not Available 0

Adjacent Atomic Numbers
0

Next Element
30 0

Previous Element
31 0

Magnetic
0

Electrical Properties
0

Resistivity
96.10 nΩ·m 32

Electrical Conductivity
0.10 106/cm Ω 20

Electron Affinity
15.70 kJ/mol 34

Electrical Property
Conductor 0

Magnetic Characteristics
0

Specific Gravity
7.20 45

Magnetic Ordering
Ferromagnetic 0

Permeability
6.3 * 10-3 H/m 1

Susceptibility
2,00,000.00 1

Thermal
0

Specific Heat
0.44 J/(kg K) 13

Thermal Conductivity
80.40 W/m·K 22

Critical Temperature
Not Available 0

Molar Heat Capacity
25.10 J/mol·K 43

Thermal Expansion
11.80 µm/(m·K) 33

Standard Molar Entropy
27.30 J/mol.K 56

Enthalpy
0

Enthalpy of Vaporization
351.00 kJ/mol 23

Enthalpy of Fusion
14.90 kJ/mol 22

Enthalpy of Atomization
414.20 kJ/mol 19

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