Septseptseptium (Sss)

Septseptseptium is the systematic name of the theoretical 777º element in the periodic table with a symbol of Sss and atomic number of 777. Septseptseptium, also known as element 777, has sette­cento­settanta­sette protons in its nucleus, and sette­cento­settanta­sette electrons in its shells.