Hexoctseptium (Hos)
Hexoctseptium is the systematic name of the theoretical ۶۸۷. element in the periodic table with a symbol of Hos and atomic number of 687. Hexoctseptium, also known as element 687, has ششصد و هشتاد و هفت protons in its nucleus, and ششصد و هشتاد و هفت electrons in its shells.