26Fe55.845
Iron
Transition metal · element 26 · group 8, period 4
Quick facts
| Symbol | Fe |
|---|---|
| Atomic number | 26 |
| Relative atomic mass | 55.845 |
| Category | Transition metal |
| Position | group 8, period 4 |
| State at 20 °C | Solid |
| Melting point | 1,538 °C |
| Boiling point | 2,861 °C |
| Density | 7.874 g/cm³ |
| Electronegativity | 1.83 |
| Electron configuration | [Ar] 3d6 4s2 |
About Iron
Iron has the symbol Fe and atomic number 26, which means every iron atom has 26 protons in its nucleus and, in a neutral atom, 26 electrons. At room temperature it is a solid.
Transition metals sit in the middle block of the periodic table. They are usually hard, dense and strong, often form coloured compounds, can have more than one ion charge, and many are useful catalysts.
It melts at 1,538 °C and boils at 2,861 °C.
Explore it
See where iron sits, and drag the temperature slider to watch it melt and boil, on the interactive periodic table. Practise with quizzes on OmniEx.