Pentennennium (Pee)

Pentennennium is the systematic name of the theoretical ที่ 599 element in the periodic table with a symbol of Pee and atomic number of 599. Pentennennium, also known as element 599, has ห้า​ร้อย​เก้า​สิบ​เก้า protons in its nucleus, and ห้า​ร้อย​เก้า​สิบ​เก้า electrons in its shells.