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 septyni šimtai trisdešimt devyni protons in its nucleus, and septyni šimtai trisdešimt devyni electrons in its shells.