From Wikipedia, the free encyclopedia
Jump to: navigation, search

Ununoctium (pronounced /ˌjuːnəˈnɒktiəm/[1] or /ˌʌnəˈnɒktiəm/), also known as eka-radon or element 118, is the temporary IUPAC name[2] for the transactinide element having the atomic number 118 and temporary element symbol Uuo. An ununoctium atom is very unstable, meaning it quickly changes to another atom (nuclear reaction). Only three atoms of ununoctium have been found since 2002. Although it is a noble gas, it is more reactive than other noble gases.

Notes[change | change source]

  1. "Ununoctium". Columbia Encyclopedia. http://reference.aol.com/columbia/_a/ununoctium/20051207161909990012. Retrieved 2008-01-18. "Pronounced yoo'nànŏk`tēàm"
  2. M.E. Wieser (2006). "Atomic weights of the elements 2005 (IUPAC Technical Report)". Pure and Applied Chemistry 78 (11): 2051–2066. doi:10.1351/pac200678112051.

Other sites[change | change source]