Septoctseptium (Sos)

Septoctseptium is the systematic name of the theoretical ۷۸۷. element in the periodic table with a symbol of Sos and atomic number of 787. Septoctseptium, also known as element 787, has هفتصد و هشتاد و هفت protons in its nucleus, and هفتصد و هشتاد و هفت electrons in its shells.