Unun2
Unun2 is a hypothetical element with atomic number 122. As of my last update, no element with this atomic number has been officially discovered or synthesized. The symbol "unun2" is a temporary placeholder name assigned by the International Union of Pure and Applied Chemistry (IUPAC) under their systematic element naming convention. This convention uses Latin and Greek roots to represent the digits of the atomic number. In this case, "un" represents 1, "un" represents 2, and "un" represents 0. The final "2" in "unun2" is a typo and likely intended to be "ununilium" (120) or a similar placeholder for an element with atomic number 122.
Elements with atomic numbers greater than 104 are known as superheavy elements. These elements are generally