Hexpenthexium (Hph)
Hexpenthexium is the systematic name of the theoretical 656. element in the periodic table with a symbol of Hph and atomic number of 656. Hexpenthexium, also known as element 656, has шестьсот пятьдесят шесть protons in its nucleus, and шестьсот пятьдесят шесть electrons in its shells.