Septennunium (Seu)

Septennunium is the systematic name of the theoretical ที่ 791 element in the periodic table with a symbol of Seu and atomic number of 791. Septennunium, also known as element 791, has เจ็ด​ร้อย​เก้า​สิบ​เอ็ด protons in its nucleus, and เจ็ด​ร้อย​เก้า​สิบ​เอ็ด electrons in its shells.