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 fünf­hundert­acht­und­dreißig protons in its nucleus, and fünf­hundert­acht­und­dreißig electrons in its shells.