Septseptseptium (Sss)

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