Roentgenium

Roentgenium
Roentgenium
Symbol Rg
Atomic Number 111
Atomic Mass 280 amu
Discovered by Peter Armbruster and Gottfried Münzenberg in 1994

Chemical Properties of Roentgenium

Group 11 Melting point Unknown
Period 7 Boiling point Unknown
Block d Density (g cm−3) Unknown
Atomic number 111 Relative atomic mass [280]
State at 20°C Solid Key isotopes 280Rg
Electron configuration [Rn] 5f146d107s1 CAS number 54386-24-2
ChemSpider ID ChemSpider is a free chemical structure database

What is Roentgenium?

  • Roentgenium(Rg) is a radioactive element created artificially (extremely radioactive synthetic element) and not found in nature.
  • The element was discovered by Peter Armbruster and Gottfried Münzenberg in the year 1994.
  • It is a D-block transactinide element in the periodic table.

Uses of Roentgenium

  • The element can be used as a synthetic metal within average quantities.
  • It is mainly used for research purposes at present.

Properties of Roentgenium

  • The element has a metallic gold (yellow solid) appearance.
  • The element has around 7 isotopes whose half-lives are known, with mass numbers from 272 to 282.
  • One of the isotopes of this element (218Rg) has a half-life of 26 seconds.
  • The element undergoes decay under spontaneous fission process.

Certain Facts About Roentgenium

  • The element was named after Wilhelm Röntgen (founder of X-rays).
  • It was synthesized for the first time by Hofmann and Sigurd at the Institute for Heavy Ion Research in Germany in the year 1994.
  • The element can be formed artificially by bombarding the ions of bismuth with the ions of nickel in a linear accelerator.

Practise This Question

In the purification of NaCl, an impure solution is saturated with HCl gas. The principle involved is: