Renium
75
Re
Groep
7
Periode
6
Blok
d
Protrone
Elektrone
Neutrone
75
75
111
Algemene Eienskappe
Atoom Nommer
75
Atoommassa
186,207
Massa Nommer
186
Kategorie
Oorgangsmetale
Kleur
Grys
Radioaktief
Nee
From the Latin word Rhenus meaning Rhine
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
In 1908, Japanese chemist Masataka Ogawa announced that he discovered the 43rd element.
However, later analysis indicated the presence of rhenium (element 75), not element 43.
In 1922, Walter Noddack, Ida Eva Tacke and Otto Berg announced its separation from gadolinite and gave it the present name.
However, later analysis indicated the presence of rhenium (element 75), not element 43.
In 1922, Walter Noddack, Ida Eva Tacke and Otto Berg announced its separation from gadolinite and gave it the present name.
Elektrone per skil
2, 8, 18, 32, 13, 2
Elektronkonfigurasie
[Xe] 4f14 5d5 6s2
Chile has the world's largest rhenium reserves
Fisiese Eienskappe
Fase
Soliede
Digtheid
21,02 g/cm3
Smeltpunt
3459,15 K | 3186 °C | 5766,8 °F
Kookpunt
5869,15 K | 5596 °C | 10104,8 °F
Heat of Fusion
33 kJ/mol
Heat of Vaporization
705 kJ/mol
Spesifieke Hitte Kapasiteit
0,137 J/g·K
Oorvloed in die aardkors
2,6×10-7%
Oorvloed in die heelal
2×10-8%
Beeld Krediete: Wikimedia Commons (Alchemist-hp)
A high purity rhenium single crystal made by the floating zone process, an ebeam remelted rhenium bar and as well as a high purity rhenium cube for comparison
CAS Nommer
7440-15-5
PubChem CID Nommer
23947
Atomiese Eienskappe
Atoom radius
137 pm
Kovalente Radius
151 pm
Elektronegatiewiteit
1,9 (Pauling scale)
Ionisasie potensiaal
7,8335 eV
Atoom volume
8,85 cm3/mol
Termiese geleidingsvermoë
0,479 W/cm·K
Oksidasiestate
-3, -1, 1, 2, 3, 4, 5, 6, 7
Toepassings
Rhenium is widely used as filaments for mass spectrographs and ion gauges.
It is also used with platinum as catalysts in the production of lead-free, high-octane gasoline.
Nickel-based superalloys of rhenium are used in the combustion chambers, turbine blades, and exhaust nozzles of jet engines.
It is also used with platinum as catalysts in the production of lead-free, high-octane gasoline.
Nickel-based superalloys of rhenium are used in the combustion chambers, turbine blades, and exhaust nozzles of jet engines.
Very little is known about the toxicity of rhenium
Isotope
Stabiele Isotope
185ReOnstabiele Isotope
160Re, 161Re, 162Re, 163Re, 164Re, 165Re, 166Re, 167Re, 168Re, 169Re, 170Re, 171Re, 172Re, 173Re, 174Re, 175Re, 176Re, 177Re, 178Re, 179Re, 180Re, 181Re, 182Re, 183Re, 184Re, 186Re, 187Re, 188Re, 189Re, 190Re, 191Re, 192Re, 193Re, 194Re