Septseptunium (Ssu)

Septseptunium is the systematic name of the theoretical thứ 771 element in the periodic table with a symbol of Ssu and atomic number of 771. Septseptunium, also known as element 771, has bảy trăm bảy mươi mốt protons in its nucleus, and bảy trăm bảy mươi mốt electrons in its shells.