Rhenium
75
Re
Kumpulan
7
Kala
6
Blok
d
Proton
Elektron
Neutron
75
75
111
Ciri-Ciri Am
Nombor atom
75
Berat atom
186.207
Nombor jisim
186
Kategori
Logam peralihan
Warna
Kelabu
Radioaktif
Tidak
From the Latin word Rhenus meaning Rhine
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 32, 13, 2
Konfigurasi elektron
[Xe] 4f14 5d5 6s2
Chile has the world's largest rhenium reserves
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
21.02 g/cm3
Takat lebur
3459.15 K | 3186 °C | 5766.8 °F
Takat didih
5869.15 K | 5596 °C | 10104.8 °F
Haba pelakuran
33 kJ/mol
Haba pengewapan
705 kJ/mol
Muatan haba molar
0.137 J/g·K
Banyak pada kerak bumi
2.6×10-7%
Banyak pada alam semesta
2×10-8%
Kredit imej: 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
Nombor CAS
7440-15-5
Nombor PubChem CID
23947
Ciri-Ciri Atom
Jejari atom
137 pm
Jejari kovalen
151 pm
Keelektronegatifan
1.9 (Skala Pauling)
Kebolehan mengion
7.8335 eV
Isipadu atom
8.85 cm3/mol
Daya pengaliran terma
0.479 W/cm·K
Keadaan pengoksidaan
-3, -1, 1, 2, 3, 4, 5, 6, 7
Aplikasi
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
Isotop
Isotop stabil
185ReIsotop tidak stabil
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