Vlastnosti

CAS Number7429-91-6
PubChem CID23912
Atomový poloměr178
Molární objem19
Atomová hmotnost162,5
Blokf
Teplota varu2 567
Bulk Modulus
KategorieLanthanoidy
Krystalografická soustavaHexagonální
BarvaStříbrná
Kovalentní poloměr192
Hustota8,55
Electrical Resistivity
Elektronová konfigurace[Xe] 4f10 6s2
Elektronů v obalu2, 8, 18, 28, 8, 2
Elektronegativita1,22
Electrons66
Skupinana
Skupenské teplo tání11,1
Skupenské teplo varu280
Ionizační potenciál5,939
Magnetic Ordering
Magnetic Susceptibility
Hmotnost162,5
Mass Number66
Teplota tání1 407
NázevDysprosium
Neutrony97
Atomové číslo163
Oxidační čísla2, 3
Perioda6
SkupenstvíPevná
Poisson Ratio
Protony66
Shear Modulus
Měrná tepelná kapacita0,17
ZnačkaDy
Tepelná vodivost0,107
Van der Waals radius
Young's Modulus
Hojnost
Hojnost v zemské kůře0.00062%
Hojnost ve vesmíru2×10-7%
Dy Dysprosium 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. From the Latin word tellus, earth 66 1886 Paul Emile Lecoq de Boisbaudran France From the Greek word "dysprositos" meaning "hard to obtain"

Izotopy telluru

Standard Atomic Weight

162.500(1)

Stabilní izotopy

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

Nestabilní izotopy

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

Telur a jeho sloučeniny jsou považovány za lehce toxické
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.