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Rhenium is a chemical element; it has symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. It has one of the highest melting and boiling points of ...
75 Re rhenium; use: 5869 K: 5596 °C: 10105 °F ... Boiling points of the elements (data page) ... Melting points of the elements (data page) ...
Melting point In the ... 75 Re rhenium; use: 3459 K: 3186 °C: 5767 °F WEL: ... Boiling points of the elements (data page) List of chemical elements
Refractory metals have high melting points, with tungsten and rhenium the highest of all elements, and the other's melting points only exceeded by osmium and iridium, and the sublimation of carbon. These high melting points define most of their applications. All the metals are body-centered cubic except rhenium which is hexagonal close-packed.
Spectral lines of rhenium: Other properties; ... Color Phase Melting point Boiling point Sublimation point Density [g/L at s.t.p.] Density [kg/m3 at ...
The free element has the third-highest melting point and highest boiling point of any element. Rhenium resembles manganese chemically and is obtained as a by-product of molybdenum and copper ore's extraction and refinement. Rhenium shows in its compounds a wide variety of oxidation states ranging from −1 to +7.
Rhenium(VII) oxide is the inorganic compound with the formula Re 2 O 7. This yellowish solid is the anhydride of HOReO 3. Perrhenic acid, Re 2 O 7 ·2H 2 O, is closely related to Re 2 O 7. Re 2 O 7 is the raw material for all rhenium compounds, being the volatile fraction obtained upon roasting the host ore. [2]
75 Re rhenium; use: 60.43 CRC: 60.43 LNG: 60.43 ... Values refer to the enthalpy change between the liquid phase and the most stable solid phase at the melting point ...