Røntgenium
111
Rg
Gruppe
11
Periode
7
Blok
d
Protoner
Elektroner
Neutroner
111
111
170
Generelle Egenskaber
Atomnummer
111
Atommasse
[281]
Masseantal
281
Kategori
Overgangsmetaller
Farve
n/a
Radioaktiv
Ja
Named after Wilhelm Conrad Röntgen, the German physicist
Krystalstruktur
n/a
Historie
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.
Elektroner i hver skal
2, 8, 18, 32, 32, 17, 2
Elektronkonfiguration
[Rn] 5f14 6d9 7s2
Roentgenium has no stable or naturally-occurring isotopes
Fysiske Egenskaber
Tilstandsform
Fast stof
Massefylde
-
Smeltepunkt
-
Kogepunkt
-
Smeltevarme
n/a
Fordampningsvarme
n/a
Varmefylde
-
Forekomst i jordskorpen
n/a
Forekomst i universet
n/a
Billede akkrediteringer: Wikimedia Commons (Commander-pirx)
The element was discovered at the Institute for Heavy Ion Research in Darmstadt, Germany
CAS-nummer
54386-24-2
PubChem CID-nummer
n/a
Atomare egenskaber
Atomradius
-
Kovalent radius
121 pm
Elektronegativitet
-
Ioniseringspotentiale
-
Atomvolumen
-
Varmeledningsevne
-
Oxidationstrin
-1, 1, 3, 5
Anvendelser
Roentgenium is used for scientific research purposes only.
Roentgenium is harmful due to its radioactivity
Isotoper
Stabile isotoper
-Ustabile isotoper
272Rg, 273Rg, 274Rg, 275Rg, 276Rg, 277Rg, 278Rg, 279Rg, 280Rg, 281Rg, 282Rg, 283Rg