111

Rg

Roentgenium
[ 280 ]
 Historical Information

Element 111, roentgenium, was discovered towards the end of 1994 at the GSI in Darmstadt, Germany. Three atoms of an isotope 272Uuu were produced in reactions between 209Bi targets and 64Ni projectiles.

Basic Information Shells
  • Name:Roentgenium
  • Symbol: Rg
  • Atomic number: 111
  • Atomic weight:[ 280 ]
  • Standard state: presumably a solid at 298 K
  • Group in periodic table: 11
  • Group name:none
  • Period in periodic table: 7
  • Block in periodic table: d-block
  • Classification: Metallic
 Roentgenium
Uses Trivia
  • It has no uses.

Chemically, roentgenium should be in the same group as the elements copper, silver, and gold (Group 11).