Hexhexunium (Hhu)

Hexhexunium is the systematic name of the theoretical thứ 661 element in the periodic table with a symbol of Hhu and atomic number of 661. Hexhexunium, also known as element 661, has sáu trăm sáu mươi mốt protons in its nucleus, and sáu trăm sáu mươi mốt electrons in its shells.