Rhenium: the essentials
Rhenium is silvery white with a metallic lustre; its density is exceeded only by that of platinum, iridium, and osmium, and its melting point is exceeded only by that of tungsten and carbon. It has other useful properties. It is expensive but useful as a trace alloying agent.
Rhenium: historical information
Discovery of rhenium is generally attributed to Walter Noddack, Ida Tacke-Noddack, and Otto Berg, who announced in 1925 they had detected the element in platinum ores and columbite.
Rhenium: physical properties
Rhenium: orbital properties
Isolation: coming soon!