• Latin name:
  Ferrum
• English name:
  Iron
• Year discovered:
  5000 BC
• Discovered by:
  ----
• Country of Discovery:
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• Cost per 100 grams:
  2.45 USD
• CAS Number:
  CAS7439-89-6
• Electron shell:
  K2-L8-M14-N2-O0-P0-Q0-R0

Iron is a chemical element with symbol Fe (from Latin:ferrum) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core.

• Atomic number:
  26
• Atomic weight (Relative atomic mass):
  55.8451436425238 (g/mol)
• Density:
  7.874 (g/cm³)
• Melting point:
  1538.0°C = 2800.40°F = 1811.15K
• Boiling point:
  2861.0°C = 5181.80°F = 3134.15K
• Valence electrons:
  2, 3, 4, 6
• Period:
  4
• Group:
  
• Block:
  d - block
• Emission spectrum:
  

• Phase:
  Solid

  
• Fusion heat:
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• Specific heat:
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• Thermal expansion:
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• Vaporization heat:
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• Electron configuration:
  [Ar] 3d6 4s2 = 1s2 2s2 2p6 3s2 3p6 3d6 4s2
Oxidation states:

• 0
• -1
• -2
• -
• -
• -
• +1
• +2
• +3
• +4
• +5
• +6
• -
• -
• -
• Ion charge:
  Fe^{2+, 3+}
• The ionization potential of an atom:
  7.902 (eV)
• Atomic radius:
  156 (pm)
• Covalent radius:
  124 (pm)
• Van der Waals radius:
  194 (pm)

• Electrical conductivity:
  10405827.2632674 (S/m)
• Electrical type:
  Conductor
• Magnetic type:
  Ferromagnetism
• Volume magnetic susceptibility:
  ----
• Mass magnetic susceptibility:
  ----
• Molar magnetic susceptibility:
  ----
• Resistivity:
  9.7 ⋅ 10^-8 (Ω · m)
• Superconducting point:
  ----

• Debye temperature:
  186.85°C = 368.33°F = 460K

• Colour:
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• CAS Number:
  CAS7439-89-6
• CID Number:
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• RTEC Number:
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• Brinell hardness:
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• Mohs hardness:
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• Vickers hardness:
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• Bulk modulus:
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• Young's modulus:
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• Liquid density:
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• Molar volume:
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• Poisson's ratio:
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• Shear modulus:
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• Speed of sound transmission:
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• Refractive index:
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• Thermal conductivity:
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• Electronegativity:
  1.83
• Valence electrons:
  2, 3, 4, 6
• Electron affinity:
  14.785 kJ/mole

• Radioactive:
  No
• Half life:
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• Lifetime:
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• Neutron cross section, barn:
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• Universe contains "Iron" at the rate of
  0.11%
• Sun contains "Iron" at the rate of
  0.14%
• Oceans contain "Iron" at the rate of
  3 ⋅ 10^-5%
• Human body contains "Iron" at the rate of
  0.00599264542181%
• The Earth's crust consists of "Iron" at the rate of
  5.63%
• Meteorites consist of "Iron" at the rate of
  22.0%