Hexpentseptium (Hps)
Hexpentseptium is the systematic name of the theoretical thứ 657 element in the periodic table with a symbol of Hps and atomic number of 657. Hexpentseptium, also known as element 657, has sáu trăm năm mươi bảy protons in its nucleus, and sáu trăm năm mươi bảy electrons in its shells.