Hexhexpentium (Hhp)

Hexhexpentium is the systematic name of the theoretical 665. element in the periodic table with a symbol of Hhp and atomic number of 665. Hexhexpentium, also known as element 665, has sechs­hundert­fünf­und­sechzig protons in its nucleus, and sechs­hundert­fünf­und­sechzig electrons in its shells.