Dysprosium is a chemical element with the symbol Dy and atomic number 66.
Dysprosium is a rare earth element that has a metallic, bright silver luster, relatively stable in air at room temperature, but dissolving readily in dilute or concentrated mineral acids with the emission of hydrogen. It is soft enough to be cut with bolt-cutters (but not with a knife), and can be machined without sparking if overheating is avoided. Dysprosium's characteristics can be greatly affected even by small amounts of impurities.
Technical Data
Symbol |
Dy |
Density (25°C)/gcm-3 |
8.559 |
Atomic number |
66 |
Melting point /°C |
1407 |
No. of naturally occurring isotopes |
7 |
Boiling point /°C |
-2600 |
Atomic weight |
162.50 (+/-3) |
ΔHvap/kJmol-1 |
280 |
Outer electron configuration |
4f106s2 |
ΔHmonoatomic gas/kJmol-1 |
291 |
Metal radius(6-coordinate)/pm |
178.1 |
ΔH(hydration Ln3+)/kJmol-1 |
3637 |
Ionic radius(6-coordinate)/pm III |
91.2 |
Ionization cnergy/kJmol-1 |
567 |
Ionic radius(6-coordinate)/pm II |
107 |
Ionization energy/kJmol-1 |
1126 |
Electrical resistivity |
|
Ionization cncrgy/kJmol-1 |
2230 |
(25°C)/μohm cm |
91 |
Eo(M3+(aq)+ 3e- →M(S))/V |
-2.353 |
Evaporation Techniques
Temperature (oC) @Vap. Pressure |
Techniques |
Remarks |
10-8 Torr |
10-6 Torr |
10-4 Torr |
Electron Beam |
Crucible |
Coil |
Boat |
625 |
750 |
900 |
Good |
- |
- |
Tantalum |
|
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