Pentnilseptium (Pns)
Pentnilseptium is the systematic name of the theoretical thứ 507 element in the periodic table with a symbol of Pns and atomic number of 507. Pentnilseptium, also known as element 507, has năm trăm lẻ bảy protons in its nucleus, and năm trăm lẻ bảy electrons in its shells.