Roentgenium
111
Rg
Kumpulan
11
Kala
7
Blok
d
Proton
Elektron
Neutron
111
111
170
Ciri-Ciri Am
Nombor atom
111
Berat atom
[281]
Nombor jisim
281
Kategori
Logam peralihan
Warna
Tiada
Radioaktif
Ya
Named after Wilhelm Conrad Röntgen, the German physicist
Struktur hablur
Tiada
Sejarah
Roentgenium was first synthesized by an international team led by Sigurd Hofmann at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt, Germany in 1994.
The team bombarded a target of bismuth-209 with accelerated nuclei of nickel-64 and detected a single atom of the isotope roentgenium-272.
The team bombarded a target of bismuth-209 with accelerated nuclei of nickel-64 and detected a single atom of the isotope roentgenium-272.
Bilangan elektron per petala
2, 8, 18, 32, 32, 17, 2
Konfigurasi elektron
[Rn] 5f14 6d9 7s2
Roentgenium has no stable or naturally-occurring isotopes
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
- g/cm3
Takat lebur
-
Takat didih
-
Haba pelakuran
Tiada kJ/mol
Haba pengewapan
Tiada kJ/mol
Muatan haba molar
- J/g·K
Banyak pada kerak bumi
Tiada
Banyak pada alam semesta
Tiada
Kredit imej: Wikimedia Commons (Commander-pirx)
Unsur ini ditemui di Institut Penyelidikan Ion Berat di Darmstadt, Jerman
Nombor CAS
54386-24-2
Nombor PubChem CID
Tiada
Ciri-Ciri Atom
Jejari atom
-
Jejari kovalen
121 pm
Keelektronegatifan
-
Kebolehan mengion
-
Isipadu atom
-
Daya pengaliran terma
-
Keadaan pengoksidaan
-1, 1, 3, 5
Aplikasi
Roentgenium is used for scientific research purposes only.
Roentgenium is harmful due to its radioactivity
Isotop
Isotop stabil
-Isotop tidak stabil
272Rg, 273Rg, 274Rg, 275Rg, 276Rg, 277Rg, 278Rg, 279Rg, 280Rg, 281Rg, 282Rg, 283Rg