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 сімсот пʼятдесят девʼять protons in its nucleus, and сімсот пʼятдесят девʼять electrons in its shells.