Pentpenthexium (Pph)

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