Septoctseptium (Sos)

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