Hexbiunium (Hbu)

Hexbiunium is the systematic name of the theoretical thứ 621 element in the periodic table with a symbol of Hbu and atomic number of 621. Hexbiunium, also known as element 621, has sáu trăm hai mươi mốt protons in its nucleus, and sáu trăm hai mươi mốt electrons in its shells.