Encyclopedia of Metalloproteins

2013 Edition
| Editors: Robert H. Kretsinger, Vladimir N. Uversky, Eugene A. Permyakov

Rhenium, Physical and Chemical Properties

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-1533-6_387

Physical Properties

Rhenium is a transition metal. Like the other members of the group it is less reactive than the typical metals but more reactive than the less typical metals. The transition metals are characterized by having the outermost electron shell containing two electrons and the next inner shell an increasing number of electrons. Because of the small energy differences between the valence shells, a number of oxidation states occur. The metal occurs in nature in association with molybdenite, MoS 2, which in turn is associated with chalocopyrite in porphyry copper ores. Molybdenite occurring in quartz veins does not contain rhenium.

Atomic number

75

Atomic weight

186.207

Relative abundance in the Earth’s crust, %

7 × 10–8

Density at 20°C, g/cm3

21.0

Metallic radius, pm

137

Ionic radius (VII), pm

53

Melting point, °C

3,180

Boiling point, °C

5,870

Heat of fusion, kJ/mol

33

Heat of sublimation

 ΔHB (monatomic gas)

+ 779 (± 8) kJ/mol

Enthalpy of formation of Re2O7, kJ/mol

–1,241

Ele...

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References

  1. Habashi F (2003) Metals from ores. An introduction to extractive metallurgy. Métallurgie Extractive Québec, Quebec City, Canada. Distributed by Laval University Bookstore, www.zone.ul.ca
  2. Nadler HG (1997) Rhenium and rhenium compounds. In: Habashi F (ed) Handbook of extractive metallurgy. Wiley-VCH, Weinheim, pp 1491–1502Google Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Mining, Metallurgical, and Materials EngineeringLaval UniversityQuebec CityCanada