52
Te
16
週期
5
p
個質子
電子
個中子
52
52
76
一般屬性
原子序數
52
標準原子質量
127.6
品質編號
128
類別
類金屬
顏色
銀色
放射性
From the Latin word tellus, earth
晶體結構
簡單三角
歷史
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.
每個外殼的電子
2, 8, 18, 18, 6
電子排布
[Kr] 4d10 5s2 5p4
Te
In air, tellurium burns with a greenish-blue flames, forming the dioxide
物理性質
物態
固體
密度
6.232 g/cm3
熔點
722.66 K | 449.51 °C | 841.12 °F
沸點
1261.15 K | 988 °C | 1810.4 °F
熔化熱
17.5 kJ/mol
汽化熱
48 kJ/mol
比熱容
0.202 J/g·K
地殼豐度
9.9×10-8%
宇宙豐度
9×10-7%
Metallic
圖片來源: Images-of-elements
Metallic tellurium
CAS 編號
13494-80-9
Pubchem CID 編號
6327182
原子性質
原子半徑
140 pm
共價半徑
138 pm
電負性
2.1 (鲍林标度)
電離電位
9.0096 eV
原子體積
20.5 cm3/mol
熱導率
0.0235 W/cm·K
氧化態
-2, 2, 4, 5, 6
應用
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.
Tellurium and tellurium compounds are considered to be mildly toxic
同位素
穩定同位素
120Te, 122Te, 124Te, 125Te, 126Te
不穩定同位素
105Te, 106Te, 107Te, 108Te, 109Te, 110Te, 111Te, 112Te, 113Te, 114Te, 115Te, 116Te, 117Te, 118Te, 119Te, 121Te, 123Te, 127Te, 128Te, 129Te, 130Te, 131Te, 132Te, 133Te, 134Te, 135Te, 136Te, 137Te, 138Te, 139Te, 140Te, 141Te, 142Te