Septpentennium (Spe)

Septpentennium is the systematic name of the theoretical 759. element in the periodic table with a symbol of Spe and atomic number of 759. Septpentennium, also known as element 759, has septyni šimtai penkiasdešimt devyni protons in its nucleus, and septyni šimtai penkiasdešimt devyni electrons in its shells.