Penttrioctium (Pto)

Penttrioctium is the systematic name of the theoretical ที่ 538 element in the periodic table with a symbol of Pto and atomic number of 538. Penttrioctium, also known as element 538, has ห้า​ร้อย​สาม​สิบ​แปด protons in its nucleus, and ห้า​ร้อย​สาม​สิบ​แปด electrons in its shells.