Renium

75
Re
Groep
7
Periode
6
Blok
d
Protonen
Elektronen
Neutronen
75
75
111
Algemene Eigenschappen
Atoomnummer
75
Atomair gewicht
186,207
Massa Getal
186
Categorie
Overgangsmetalen
Kleur
Grijs
Radioactief
Nee
From the Latin word Rhenus meaning Rhine
Kristalstructuur
Eenvoudige Hexagonaal
Historie
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.
Eletronen per schil
2, 8, 18, 32, 13, 2
Electronconfiguratie
[Xe] 4f14 5d5 6s2
Re
Chile has the world's largest rhenium reserves
Fysieke Eigenschappen
Fase
Vast
Dichtheid
21,02 g/cm3
Smeltpunt
3459,15 K | 3186 °C | 5766,8 °F
Kookpunt
5869,15 K | 5596 °C | 10104,8 °F
Fusiewarmte
33 kJ/mol
Verdampingswarmte
705 kJ/mol
Specifieke Warmtecapaciteit
0,137 J/g·K
Overvloedig aanwezig in de aardkorst
2,6×10-7%
Overvloedig aanwezig in het universum
2×10-8%
A
Verdiensten voor afbeeldingen: 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-nummer
7440-15-5
PubChem CID nummer
23947
Atoomeigenschappen
Atoomstraal
137 pm
Covalentiestraal
151 pm
Electronegativiteit
1,9 (Pauling schaal)
Ionisatiepotentiaal
7,8335 eV
Atoomvolume
8,85 cm3/mol
Thermische geleiding
0,479 W/cm·K
Oxidatietoestanden
-3, -1, 1, 2, 3, 4, 5, 6, 7
Toepassingen
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.
Very little is known about the toxicity of rhenium
Isotopen
Stabiele isotopen
185Re
Instabiele isotopen
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