Metals
- Elements List
- Aluminium, Al
- Antimony, Sb
- Arsenic, As
- Barium, Ba
- Beryllium, Be
- Bismuth, Bi
- Boron, B
- Cadmium, Cd
- Calcium, Ca
- Carbon, C (Graphite)
- Cerium, Ce
- Cesium, Cs
- Chromium, Cr
- Cobalt, Co
- Copper, Cu
- Dysprosium, Dy
- Erbium, Er
- Europium, Eu
- Gadolinium, Gd
- Gallium, Ga
- Germanium, Ge
- Gold, Au
- Hafnium, Hf
- Holmium, Ho
- Indium, In
- Iridium, Ir
- Iron, Fe
- Lanthanum, La
- Lead, Pb
- Lithium, Li
- Lutetium, Lu
- Magnesium, Mg
- Manganese, Mn
- Mercury, Hg
- Molybdenum, Mo
- Neodymium, Nd
- Nickel, Ni
- Niobium, Nb
- Osmium, Os
- Palladium, Pd
- Phosphorus, P
- Platinum, Pt
- Potassium, K
- Praseodymium, Pr
- Rhenium, Re
- Rhodium, Rh
- Rubidium, Rb
- Ruthenium, Ru
- Samarium, Sm
- Scandium, Sc
- Selenium, Se
- Silicon, Si
- Silver, Ag
- Sodium, Na
- Strontium, Sr
- Sulphur, S
- Tantalum, Ta
- Tellurium, Te
- Terbium, Tb
- Thallium, Tl
- Thorium, Th
- Thulium, Tm
- Tin, Sn
- Titanium, Ti
- Tungsten, W
- Vanadium, V
- Ytterbium, Yb
- Yttrium, Y
- Zinc, Zn
- Zirconium, Zr
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Iron, Fe
Description
Iron is a chemical element with the symbol Fe (Latin: ferrum) and atomic number 26. Iron is a group 8 and period 4 element. Iron is a lustrous, silvery soft metal. It is one of the few ferromagnetic elements.
Iron and nickel are notable for being the final elements produced by stellar nucleosynthesis, and are therefore the heaviest elements which do not require a red giant or supernova for formation. Iron and nickel are therefore the most abundant metals in metallic meteorites and in the dense-metal cores of planets such as Earth. Iron and iron alloys are also the most common source of ferromagnetic materials in everyday use.
Available Forms:
| Technical Data | ||||||||
| Symbol | Fe | Density (20°C)/gcm-3 | 7.874 | |||||
| Atomic number | 26 | Melting point / °C | 1535 | |||||
| No. of naturally occurring isotopes | 4 | Boiling point / °C | 2750 | |||||
| Atomic weight | 55.847(+/-3) | ΔHfus/kJmol-1 | 13.8 | |||||
| Electronic configuration | [Ar]3d64s2 | ΔHvap/kJmol-1 | 340(+/-13) | |||||
| Metal radius(12-coordinate)/pm | 126 | ΔHf(monoatomic gas/kJmol-1 | 398(+/-17) | |||||
| Ionic radius(4-coordinate)/pm VI | 25 | Electrical resistivity | ||||||
| Ionic radius(6-coordinate)/pm IV | 58.5 | (20 °C)/μohm cm | 9.71 | |||||
| Ionic radius(6-coordinale)/pm III | 55(ls), 64.5(hs) | Ionization energy/kJmol-1 I | 759 | |||||
| Ionic radius(6-coordinatc)/pm 11 | 61(ls), 78(hs) | Ionization energy/kJmol-1 II | 1561 | |||||
| Electronegativity χ | 1.8 | Ionization encrgy'kJmol-1 III | 2957 | |||||
| Evaporation Techniques | ||||||||
| Temperature (oC) @Vap. Pressure | Techniques | Remarks | ||||||
| 10-8 Torr | 10-6 Torr | 10-4 Torr | Electron Beam | Crucible | Coil | Boat | ||
| 858 | 998 | 1180 | Excellent | Al2O3 | Tungsten | Tungsten | Attacks Tunsgten. Films hard, smooth. Use gentle preheat to outgas. Go to Evaporation Sources Page | |
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