Septnilseptium (Sns)
Septnilseptium is the systematic name of the theoretical thứ 707 element in the periodic table with a symbol of Sns and atomic number of 707. Septnilseptium, also known as element 707, has bảy trăm lẻ bảy protons in its nucleus, and bảy trăm lẻ bảy electrons in its shells.