Røntgenium

111
Rg
Gruppe
11
Periode
7
Blok
d
Protons
Electrons
Neutrons
111
111
170
General Properties
Atomnummer
111
Atommasse
[281]
Mass Number
281
Kategori
Overgangsmetaller
Farve
n/a
Radioactive
Ja
Named after Wilhelm Conrad Röntgen, the German physicist
Krystalstruktur
n/a
History
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.
Elektroner i hver skal
2, 8, 18, 32, 32, 17, 2
Elektronkonfiguration
[Rn] 5f14 6d9 7s2
Rg
Roentgenium has no stable or naturally-occurring isotopes
Physical Properties
Tilstandsform
Fast stof
Massefylde
-
Smeltepunkt
-
Kogepunkt
-
Smeltevarme
n/a
Fordampningsvarme
n/a
Varmefylde
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
The
Billede akkrediteringer: Wikimedia Commons (Commander-pirx)
The element was discovered at the Institute for Heavy Ion Research in Darmstadt, Germany
CAS Number
54386-24-2
PubChem CID Number
n/a
Atomic Properties
Atomradius
-
Kovalent radius
121 pm
Elektronegativitet
-
Ionization Potential
-
Atomic Volume
-
Varmeledningsevne
-
Oxidationstrin
-1, 1, 3, 5
Applications
Roentgenium is used for scientific research purposes only.
Roentgenium is harmful due to its radioactivity
Isotoper
Stable Isotopes
-
Unstable Isotopes
272Rg, 273Rg, 274Rg, 275Rg, 276Rg, 277Rg, 278Rg, 279Rg, 280Rg, 281Rg, 282Rg, 283Rg