Re
元素符号:Re
中文名称:铼
英文名称:Rhenium
原子序数:75
原子量:186.2
外围电子排布:5d5 6s2
核外电子排布:2,8,18,32,13,2
常见化合价:-1,+1,+2,+3,+4
密度:21
溶点:3180
沸点:5627
所属周期:6
所属族数:VIIB
原子半径:1.97
离子半径:0.53(+7)
共价半径:1.28
同位素及放射性:Re-185 *Re-187(放 β)
发现人:Walter Noddack, Ida Tacke, Otto Berg
发现时间:1925
发现地点:德国
名称由来:Latin: Rhenus, the Rhine River.
元素描述:Rare and costly, dense, silvery-white metal.
元素来源:Found in small amounts in gadolinite and molybdenite. Has a very high melting point.
元素用途:Mixed with tungsten or platinum to make filaments for mass spectrographs. Its main value is as a trace alloying agent for hardening metal components that are subjected to continuous frictional forces.