Septnilennium (Sne)

Septnilennium is the systematic name of the theoretical ที่ 709 element in the periodic table with a symbol of Sne and atomic number of 709. Septnilennium, also known as element 709, has เจ็ด​ร้อย​เก้า protons in its nucleus, and เจ็ด​ร้อย​เก้า electrons in its shells.