Element Ununpentium, Uup

The element 115, Ununpentium, Uup was synthesized in summer 2003 at the U400 cyclotron with the Dubna gas-filled recoil separator, at the Flerov Laboratory of Joint Institute for Nuclear Research, Dubna, Russia (Yu. Ts. Oganessian et al.) with subsequent publishing only in February 2004.

The name Ununpentium (symbol Uup) is a temporary IUPAC systematic chemical element name for element 115. This name will be changes in future. Another temporary name for this element is eka-bismuth.