Octunpentium (Oup)

Octunpentium is the systematic name of the theoretical 815. element in the periodic table with a symbol of Oup and atomic number of 815. Octunpentium, also known as element 815, has вісімсот пʼятнадцять protons in its nucleus, and вісімсот пʼятнадцять electrons in its shells.