Iron - Fe

Atomic Number 26     Atomic Mass 55.845     Density 7.86 g/mL

State solid    Color grey     Electronegativity 1.83

Melting Point 1535°C     Boiling Point 2750°C

Natural Isotopes Fe-54 5.8%   Fe-56 91.72%    Fe-57 2.2%   Fe-58 0.28%

Abbreviated Electron Configuration [Ar] 3d6 4s2

Known since BC