Atomic number

26

Atomic mass

55.85 g.mol ^-1

Electronegativity according to Pauling

1.8

Density

7.8 g.cm^-3 at 20°C

Melting point

1536 °C

Boiling point

2861 °C

Vanderwaalsradius 

0.126 nm

Ionic radius

0.076 nm (+2) ; 0.064 nm (+3)

Isotopes

8

Electronic shell 

[ Ar ] 3d⁶ 4s²

Energy of first ionisation

761 kJ.mol ^-1

Energy of second ionisation

1556.5 kJ.mol ^-1

Energy of third ionisation

2951 kJ.mol ^-1

Standard potential

- o.44 V (Fe²⁺/ Fe ) ; 0.77 V ( Fe³⁺/ Fe²⁺ )

Discovered by

The ancients