Hexhexnilium (Hhn)

Hexhexnilium is the systematic name of the theoretical ที่ 660 element in the periodic table with a symbol of Hhn and atomic number of 660. Hexhexnilium, also known as element 660, has หก​ร้อย​หก​สิบ protons in its nucleus, and หก​ร้อย​หก​สิบ electrons in its shells.