Rhenium

Rhenium
Properties
Atomic symbol	Re
Atomic number	75
Classification	Transition Metals
Atomic mass	186.207 amu
Other Information
Date of discovery	1925
Name of discoverer	Walter Noddack, Ida Tacke, and Otto Berg
Name origin	From the Greek name for the Rhine River, Rhenus.
Uses	It is added to tungsten and molybdenum alloys. Also used in refractory metal components of missiles, electronic filaments, electrical contacts, high-temperature thermocouplers, oven filaments, electrodes, igniters for flash bulbs, jewelry, plating of metals by electrolysis and vapor-phase deposition.
Obtained from	Found in small amounts in gadolinite and molybdenite; usually extracted from the flue dusts of molybdenum smelters.