Penttrioctium (Pto)

Penttrioctium is the systematic name of the theoretical 538. element in the periodic table with a symbol of Pto and atomic number of 538. Penttrioctium, also known as element 538, has penki šimtai trisdešimt aštuoni protons in its nucleus, and penki šimtai trisdešimt aštuoni electrons in its shells.