Hexbiunium (Hbu)

Hexbiunium is the systematic name of the theoretical ที่ 621 element in the periodic table with a symbol of Hbu and atomic number of 621. Hexbiunium, also known as element 621, has หก​ร้อย​ยี่​สิบ​เอ็ด protons in its nucleus, and หก​ร้อย​ยี่​สิบ​เอ็ด electrons in its shells.