Septoctseptium (Sos)
Septoctseptium is the systematic name of the theoretical 787. element in the periodic table with a symbol of Sos and atomic number of 787. Septoctseptium, also known as element 787, has septiņsimt astoņdesmit septiņi protons in its nucleus, and septiņsimt astoņdesmit septiņi electrons in its shells.