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10203040506070809010011000.511.522.53‌ Å

26 - Iron transition metal

Atomic Mass (u)

55.85

Density (g/cm³)

7.87

Phase

Solid

Year of Discovery

~5000 BC
IronFeElectron 1Electron 2Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 1Electron 2

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.

26 Atomic Number
55.85  u Atomic Mass
1808.15  K Melting Point
3134  K Boiling Point
7.87  g/cm³ Density
1.7  Å Atomic Radius
1.32  Å Covalent Radius
1.83 Electronegativity
7.9  eV First Ionization Energy
14.79 Electron Affinity
4 Number of Shells
2, 8, 14, 2 Electron Shell Occupations
0.45  J/g Specific Heat