Renyum
75
Re
Grup
7
Periyot
6
Blok
d
Protonlar
Elektronlar
Nötronlar
75
75
111
Temel Özellikleri
Atom numarası
75
Atom ağırlığı
186,207
Kütle Numarası
186
Kategori
Geçiş metalleri
Renk
Gri
Radyoaktif
Hayir
From the Latin word Rhenus meaning Rhine
Kristal yapısı
Basit altıgen
Tarihi
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.
Enerji seviyesi başına Elektronlar
2, 8, 18, 32, 13, 2
Elektron dizilimi
[Xe] 4f14 5d5 6s2
Chile has the world's largest rhenium reserves
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
21,02 g/cm3
Ergime noktası
3459,15 K | 3186 °C | 5766,8 °F
Kaynama noktası
5869,15 K | 5596 °C | 10104,8 °F
Ergime ısısı
33 kJ/mol
Buharlaşma ısısı
705 kJ/mol
Isı kapasitesi
0,137 J/g·K
Dünya kabuğundaki bulunulabilirliği
2,6×10-7%
Evrendeki bulunulabilirliği
2×10-8%
Resim kaynağı: 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 Numarası
7440-15-5
PubChem CID Numarası
23947
Atom Özellikleri
Atom yarıçapı
137 pm
Kovalent yarıçapı
151 pm
Elektronegatifliği
1,9 (Pauling ölçeği)
İyonlaşma enerjisi
7,8335 eV
Atomik Hacim
8,85 cm3/mol
Isıl iletkenlik
0,479 W/cm·K
Yükseltgenme seviyeleri
-3, -1, 1, 2, 3, 4, 5, 6, 7
Uygulamalar
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
İzotoplar
Kararlı izotoplar
185ReKararsız izotoplar
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