75
Re
7
週期
6
d
個質子
電子
個中子
75
75
111
一般屬性
原子序數
75
標準原子質量
186.207
品質編號
186
類別
過渡金屬
顏色
灰色
放射性
From the Latin word Rhenus meaning Rhine
晶體結構
簡單六角形
歷史
In 1908, Japanese chemist Masataka Ogawa announced that he discovered the 43rd element.

However, later analysis indicated the presence of rhenium (element 75), not element 43.

In 1922, Walter Noddack, Ida Eva Tacke and Otto Berg announced its separation from gadolinite and gave it the present name.
每個外殼的電子
2, 8, 18, 32, 13, 2
電子排布
[Xe] 4f14 5d5 6s2
Re
Chile has the world's largest rhenium reserves
物理性質
物態
固體
密度
21.02 g/cm3
熔點
3459.15 K | 3186 °C | 5766.8 °F
沸點
5869.15 K | 5596 °C | 10104.8 °F
熔化熱
33 kJ/mol
汽化熱
705 kJ/mol
比熱容
0.137 J/g·K
地殼豐度
2.6×10-7%
宇宙豐度
2×10-8%
A
圖片來源: Wikimedia Commons (Alchemist-hp)
A high purity rhenium single crystal made by the floating zone process, an ebeam remelted rhenium bar and as well as a high purity rhenium cube for comparison
CAS 編號
7440-15-5
Pubchem CID 編號
23947
原子性質
原子半徑
137 pm
共價半徑
151 pm
電負性
1.9 (鲍林标度)
電離電位
7.8335 eV
原子體積
8.85 cm3/mol
熱導率
0.479 W/cm·K
氧化態
-3, -1, 1, 2, 3, 4, 5, 6, 7
應用
Rhenium is widely used as filaments for mass spectrographs and ion gauges.

It is also used with platinum as catalysts in the production of lead-free, high-octane gasoline.

Nickel-based superalloys of rhenium are used in the combustion chambers, turbine blades, and exhaust nozzles of jet engines.
Very little is known about the toxicity of rhenium
同位素
穩定同位素
185Re
不穩定同位素
160Re, 161Re, 162Re, 163Re, 164Re, 165Re, 166Re, 167Re, 168Re, 169Re, 170Re, 171Re, 172Re, 173Re, 174Re, 175Re, 176Re, 177Re, 178Re, 179Re, 180Re, 181Re, 182Re, 183Re, 184Re, 186Re, 187Re, 188Re, 189Re, 190Re, 191Re, 192Re, 193Re, 194Re