Ununquadium (ununquaternium or eka-lead)

History

Ununquadium is officially unnamed and has the temporary symbol Uuq and atomic number 114. It was first reported by Russian scientists from Dubna (Joint Institute for Nuclear Research) in 1999.

Element 114 has a 30-second half-life, which is much longer than element 112's. This is evidence of the "island of stability" that was predicted to occur around element 114 (where the combination of protons and neutrons would combine to make a stable structure).

A beam containing ⁴⁸Ca  was aimed into a  ²⁴⁴Pu target  to make this atom.