Pentpenthexium (Pph)

Pentpenthexium is the systematic name of the theoretical 556e element in the periodic table with a symbol of Pph and atomic number of 556. Pentpenthexium, also known as element 556, has vijf­honderd­zes­en­vijftig protons in its nucleus, and vijf­honderd­zes­en­vijftig electrons in its shells.