Pentpenthexium (Pph)
Pentpenthexium is the systematic name of the theoretical 556वाँ element in the periodic table with a symbol of Pph and atomic number of 556. Pentpenthexium, also known as element 556, has पाँच सौ छप्पन protons in its nucleus, and पाँच सौ छप्पन electrons in its shells.