Septsepttrium (Sst)

Septsepttrium is the systematic name of the theoretical 773'инчи element in the periodic table with a symbol of Sst and atomic number of 773. Septsepttrium, also known as element 773, has жети жүз жетимиш үч protons in its nucleus, and жети жүз жетимиш үч electrons in its shells.