Rhenium

Statistics:

• Name: Rhenium
• Symbol: Re
• Classification: Transition Metal
• Atomic Number: 75
• Atomic Mass: 186.207 g/mol
• Density: 21.03 g/cm³
• Melting: 3180°C
• Boiling: 5627°C
• Protons & Electrons:75
• Neutrons:111
• Discovered: 1925
• Discovered By: Noddack, Tacke and Berg
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 32
• Level 5: 13
• Level 6: 2

Isotopes:

Isotope: Half-life

• ¹⁸²Re: 64.0 hours
• ^182m1Re: 12.7 hours
• ¹⁸³Re: 70.0 days
• ¹⁸⁴Re: 38.0 days
• ^184m1Re: 169 days
• ¹⁸⁵Re: stable
• ¹⁸⁶Re: 3.7183 days
• ¹⁸⁷Re: 4.35e10 years
• ¹⁸⁸Re: 17.005 hours

Brief Summary

Rhenium is a Transition Metal with the symbol 'Re' and contains 75 Protons & Electrons with 111 neutrons in the nucleus of the atom. Rhenium has an atomic mass of 186.207 g/mol and, at a temperature of 20°C, has a density of 21.03 g/cm³. It will melt at a temperature of 3180°C and boil at 5627°C.

Rhenium was discovered by Noddack, Tacke and Berg in 1925 and is named 'Rhenium' Rhines provinces of Germany.

Some common usages for Rhenium: filaments for mass spectrographs.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Rhenium :: Re :: 75 - Chemical Element. 11 Mar. 2010 <http://www.chemicalelement.com/element/rhenium.html>.