117

Uus

Ununseptium
[ 294 ]
 Historical Information

Claims for the formation of element 117 (ununseptium, Uus) were first published in April 2010 but have not been confirmed yet.
Basic Information Shells
  • Name:Ununseptium
  • Symbol: Uus
  • Atomic number: 117
  • Atomic weight: [ 294 ]
  • Standard state: presumably a solidat 98 K
  • Group in periodic table: 17
  • Group name:Halogen
  • Period in periodic table: 7
  • Block in periodic table: p-block
  • Classification: Unknown
 Ununseptium
Uses Trivia
  • It has no uses.

Decay chains involving eleven nuclei were identified by means of the Dubna Gas Filled Recoil Separator. It is said that the measured decay properties show a rise of stability for heavier isotopes.