Svojstva

CAS broj7429-91-6
PubChem CID23912
Atomski radijus178
Atomski volumen19
Relativna atomska masa162,5
Blokf
Vrelište2.567
Modul stišljivosti
KategorijaLantanoidi
Kristalna strukturaJednostavna heksagonska
BojaSrebrna
Kovalentni radijus192
Gustoća8,55
Električna otpornost
Elektronska konfiguracija[Xe] 4f10 6s2
Elektrona po ljusci2, 8, 18, 28, 8, 2
Elektronegativnost1,22
Elektroni66
Skupinana
Toplina taljenja11,1
Toplina isparavanja280
Potencijal ionizacije5,939
Magnetsko redanje
Magnetska osjetljivost
Masa162,5
Maseni broj66
Talište1.407
NazivDisprozij
Neutroni97
Atomski broj163
Stanja oksidacije2, 3
Perioda6
Agregacijsko stanjeČvrsto
Poissonov omjer
Protoni66
Modul smicanja
Specifični toplinski kapacitet0,17
SimbolDy
Toplinska vodljivost0,107
Van der Waalsov radijus
Youngov modul
Obilnost
Zastupljenost u Zemljinoj kori0.00062%
Zastupljenost u svemiru2×10-7%
Dy Disprozij 66 162.5 6 f 66 1412.0 2567.0 [Xe] 4f10 6s2 2 8 18 28 8 2 8.55 0.00062% Silver Hexagonal 1.2 {"1":"573.0","2":"1130","3":"2200","4":"3990"} 573 50 3 1.8 19.0 230.0 0.173 10.7 178.K 0 Solid, Paramagnetic, Conductor, Lanthanide, Stable, Natural dis-PRO-si-em Soft, lustrous, silvery metal. Its uses are limited to the experimental and esoteric. Usually found with erbium, holmium and other rare earths in some minerals such as monazite sand, which is often 50% rare earth by weight. hFfR_qOSa-8 Dysprosium
Tellurium was discovered in Transylvania in 1782 by Franz-Joseph Müller von Reichenstein in a mineral containing tellurium and gold.

In 1789, another Hungarian scientist, Pál Kitaibel, also discovered the element independently in an ore from Deutsch-Pilsen which had been regarded as argentiferous molybdenite.

In 1798, it was named by Martin Heinrich Klaproth who earlier isolated it from the mineral calaverite. Od latinske riječi tellus, zemlja 66 1886 Paul Emile Lecoq de Boisbaudran France From the Greek word "dysprositos" meaning "hard to obtain"

Isotopes of Tellurium

Standard Atomic Weight

162.500(1)

Stabilni izotopi

156Dy 158Dy 160Dy 161Dy 162Dy 163Dy 164Dy

Nestabilni izotopi

138Dy 139Dy 140Dy 141Dy 142Dy 143Dy 144Dy 145Dy 146Dy 147Dy 148Dy 149Dy 150Dy 151Dy 152Dy 153Dy 154Dy 155Dy 157Dy 159Dy 165Dy 166Dy 167Dy 168Dy 169Dy 170Dy 171Dy 172Dy 173Dy

Tellurium and tellurium compounds are considered to be mildly toxic
In air, tellurium burns with a greenish-blue flames, forming the dioxide
The primary use of tellurium is in alloys, foremost in steel and copper to improve machinability.

Tellurium is used as a basic ingredient in blasting caps, and is added to cast iron for chill control.

It is used in vulcanizing rubber and in catalysts for petroleum cracking.

Tellurium is used as a coloring agent in ceramics.