| General |
|---|
| Name | Iron | | Symbol | Fe | | Number | 26 | | Chemical series | Transition elements | | Group / Period | 8 / 4 | | Block | d-block | | CAS registry number | 7439-89-6 |
| Physical properties |
|---|
| State | solid | | Density | 7.874 g/cm3 | | Melting point | 1811 K (1538°C, 2800°F) | | Boiling point | 3134 K (2861°C, 5182°F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 55.845 g/mol | | Crystal structure | cubic body centered | | Electronegativity | 1.83 | | Atomic radius | 140 pm | | Atomic radius (calculated) | 156 pm | | Electron configuration | [Ar] 3d6 4s2 | | Electrons per shell | 2, 8, 14, 2 | | Number of protons | 26 | | Number of neutrons | 30 |
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Cobalt