Roentgenium
111
Rg
Golongan
11
Periode
7
Blok
d
Proton
Elektron
Neutron
111
111
170
Sifat Umum
Nomor atom
111
Massa atom
[281]
Nomor massa
281
Kategori
Logam transisi
Warna
n/a
Radioaktif
Ya
Named after Wilhelm Conrad Röntgen, the German physicist
Struktur kristal
n/a
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.
Elektron per kulit
2, 8, 18, 32, 32, 17, 2
Konfigurasi elektron
[Rn] 5f14 6d9 7s2
Roentgenium has no stable or naturally-occurring isotopes
Sifat Fisika
Fase
Solid
Kepadatan
-
Titik lebur
-
Titik didih
-
Kalor peleburan
n/a
Kalor penguapan
n/a
Kapasitas kalor molar
-
Kelimpahan di kerak bumi
n/a
Kelimpahan di alam semesta
n/a
Kredit Gambar: Wikimedia Commons (Commander-pirx)
The element was discovered at the Institute for Heavy Ion Research in Darmstadt, Germany
Nomor CAS
54386-24-2
Nomor PubChem CID
n/a
Sifat Atom
Jari-jari atom
-
Jari-jari kovalen
121 pm
Elektronegativitas
-
Potensi Ionisasi
-
Volume atom
-
Kondusivitas termal
-
Bilangan oksidasi
-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