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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Europium, Eu
Description
Europium is a chemical element with the symbol Eu and atomic number 63. It was named after the continent Europe.
Europium is the most reactive of the rare earth elements; it rapidly oxidizes in air, and resembles calcium in its reaction with water; deliveries of the metal element in solid form, even when coated with a protective layer of mineral oil, are rarely shiny. Europium ignites in air at about 150 °C to 180 °C. It is about as hard as lead and quite ductile.
Available Forms:
| Technical Data | ||||||||
| Symbol | Eu | Density (25°C)/gcm | 5.245 | |||||
| Atomic number | 63 | Melting point /°C | 826 | |||||
| No. of naturally occurring isotopes | 2 | Boiling point /°C | -1439 | |||||
| Atomic weight | 151.96 | ΔHvap/kJmol-1 | 176 | |||||
| Outer electron configuration | 4f76s2 | ΔHmonoatomic gas/kJmol-1 | 178 | |||||
| Metal radius( 6-coordinatc)/pm | 208.4 | ΔH(hydration Ln3+)/kJmol-1 | 3547 | |||||
| Ionic radius(6-coordinatc)/pm 111 | 94.7 | Ionization cnergy/kJmol-1 I | 547 | |||||
| Ionic radius(6-coordinatc)/pm 11 | 117 | Ionization cnergy/kJmol-1 II | 1085 | |||||
| Electrical resistivity (25 °C)/μohm cm | 81 | Ionization cnergy/kJmol-1 III | 2425 | |||||
| Evaporation Techniques | ||||||||
| Temperature (oC) @Vap. Pressure | Techniques | Remarks | ||||||
| 10-8 Torr | 10-6 Torr | 10-4 Torr | Electron Beam | Crucible | Coil | Boat | ||
| 280 Sublimes | 360 Sublimes | 480 Sublimes | Fair | Al2O3 | - | Tungsten & Tantalum | Low tantalum solubility. Go to Evaporation Sources Page | |
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