特性

CAS Number7429-91-6
PubChem CID23912
原子半径178
モル体積19
原子量162.5
ブロックf
沸点2,567
Bulk Modulus
カテゴリランタノイド
結晶構造六方最密構造
銀色
共有結合半径192
密度8.55
Electrical Resistivity
電子配置[Xe] 4f10 6s2
電子殻2, 8, 18, 28, 8, 2
電気陰性度1.22
Electrons66
na
融解熱11.1
蒸発熱280
イオン化エネルギー5.939
Magnetic Ordering
Magnetic Susceptibility
質量162.5
Mass Number66
融点1,407
名称ジスプロシウム
中性子97
原子番号163
酸化数2, 3
周期6
固体
Poisson Ratio
陽子66
Shear Modulus
熱容量0.17
記号Dy
熱伝導率0.107
Van der Waals radius
Young's Modulus
天然存在比
地殻中における存在比0.00062%
宇宙空間における存在比2×10-7%
Dy ジスプロシウム 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"

テルルの同位体

Standard Atomic Weight

162.500(1)

安定同位体

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

不安定同位体

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.