Penttrioctium (Pto)

Penttrioctium is the systematic name of the theoretical 538ste element in the periodic table with a symbol of Pto and atomic number of 538. Penttrioctium, also known as element 538, has vyfhonderd agt-en-dertig protons in its nucleus, and vyfhonderd agt-en-dertig electrons in its shells.