Septoctseptium (Sos)

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