Re Rhenium 75 186.207 7 6 d 75 3180.0 5600.0 [Xe] 4f14 5d5 6s2 2 8 18 32 13 2 21.0 2.6E-7% Gray Hexagonal 1.9 1.60 {"1":"760","2":"1260","3":"2510","4":"3640"} 760 14.5 +7,4,6 1.37 8.85 33.05 707.1 0.137 47.9 0 Solid, Conductor, TransitionMetal, Metal, Stable, Natural REE-ni-em Rare and costly, dense, silvery-white metal. 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. Found in small amounts in gadolinite and molybdenite. Has a very high melting point. uTm_wWAEz1Q Rhenium

Neodymium was first identified in 1885, in Vienna, by the Austrian chemist Carl Auer von Welsbach.

It was discovered in didymium, a substance incorrectly said by Carl Gustav Mosander to be a new element in 1841.

Pure neodymium metal was isolated in 1925. From the Greek word neos meaning new, and didymos, twin 75 1925 Walter Noddack, Ida Tacke, Otto Berg Germany From the Greek word "Rhenus" meaning river "Rhine"

Neodymium is considered to be moderately toxic

Most of the world's neodymium is mined in China

Neodymium is used to make specialized goggles for glass blowers.

Neodymium magnets appear in products such as microphones, professional loudspeakers, in-ear headphones, guitar and bass guitar pick-ups and computer hard disks.

Glass containing neodymium can be used as a laser material to produce coherent light.