Pentennunium (Peu)

Pentennunium is the systematic name of the theoretical ที่ 591 element in the periodic table with a symbol of Peu and atomic number of 591. Pentennunium, also known as element 591, has ห้า​ร้อย​เก้า​สิบ​เอ็ด protons in its nucleus, and ห้า​ร้อย​เก้า​สิบ​เอ็ด electrons in its shells.