Rhenium, Re, is a silvery white transition metal element, found in
Group VIIa of
the periodic table.
- Atomic Number : 75
- Relative Atomic Mass : 186
- Melting Point : 3180 degC
- Boiling Point : 5620 degC
Rhenium exists as two stable isotopes. Sixteen other isotopes are known.
Rhenium was discovered by Noddack, Tacke and Berg in 1925AD.
Rhenium is widely distributed in earth's crust at extremely low levels.
Rhenium occurs in
- platinum ores and in
- gadolinite, and
Rhenium is now recovered primarily from molybdenite roaster flue dust.
Rhenium is a dense high melting silvery solid metal.
Rhenium is very ductile and malleable.
Rhenium is used
- in exotic alloys,
- in thermocouples, and
- in catalysts, which are resistant to poisoning by nitrogen, sulphur
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