Septtriennium (Ste)
Septtriennium is the systematic name of the theoretical 739. element in the periodic table with a symbol of Ste and atomic number of 739. Septtriennium, also known as element 739, has septiņsimt trīsdesmit deviņi protons in its nucleus, and septiņsimt trīsdesmit deviņi electrons in its shells.