Roentgenium - Element Properties and Periodic Table Information

Roentgenium - An element from the Periodic Table based on the IOUPAC 1985 standard

Chemical Elements

Periodic Table

Definition of the Roentgenium Element - former temporary name: unununium
Roentgenium is a chemical element in the periodic table that has the symbol Rg (formerly temporarily Uuu) and atomic number 111. It has an atomic weight of 272 making it one of the super-heavy atoms. It is a synthetic element whose only known isotope has a half-life of around 15 ms before it decays into meitnerium. Due to its presence in Group 11 it is a transition metal and so probably metallic and solid.

Origin / Meaning of the name Roentgenium
The name was given in honour of honour of Wilhelm Roentgen

Classification of the Roentgenium Element
Roentgenium is classified as a "Transition Metal" which are located in Groups 3 - 12 of the Periodic Table. An Element classified as a Transition Metals is ductile, malleable, and able to conduct electricity and heat.

Facts about the History and the Discovery of the Roentgenium Element
Roentgenium was discovered by S. Hofmann at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany in 1994

Occurrence the Roentgenium Element
Man-made

Associated Uses of Roentgenium
No known uses
 

The Properties of the Roentgenium Element
Name of Element : Roentgenium
Symbol of Element : Rg
Atomic Number of Roentgenium : 111
Atomic Mass: [272] amu
Melting Point: N/A
Boiling Point: N/A
Number of Protons/Electrons in Roentgenium : Unknown
Number of Neutrons in Roentgenium : Unknown
Crystal Structure: Unknown
Density Unknown
Color of Roentgenium : Unknown

Roentgenium and the Periodic Table
Check out Roentgenium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the periodic law, so that chemical elements with similar properties are in the same column. Our Periodic Table is simple to use - just click on the symbol for Roentgenium for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element. An invaluable source of facts and information as a Chemistry reference guide.

Roentgenium - IUPAC and the Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the International Union of Pure Applied Chemistry, IUPAC, in 1985 and now recognises more periods and elements than Dimitri  Mendeleev knew in his day but still all fitting into his concept of  the "Periodic Table" in which Roentgenium is just one element that can be found.
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The Element Roentgenium

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