Septsepttrium (Sst)

Septsepttrium is the systematic name of the theoretical 773'inci element in the periodic table with a symbol of Sst and atomic number of 773. Septsepttrium, also known as element 773, has yeddi yüz yetmiş üç protons in its nucleus, and yeddi yüz yetmiş üç electrons in its shells.