Septsepttrium (Sst)

Septsepttrium is the systematic name of the theoretical 773-и element in the periodic table with a symbol of Sst and atomic number of 773. Septsepttrium, also known as element 773, has седемстотин седемдесет и три protons in its nucleus, and седемстотин седемдесет и три electrons in its shells.