Septpenthexium (Sph)

Septpenthexium is the systematic name of the theoretical 756. element in the periodic table with a symbol of Sph and atomic number of 756. Septpenthexium, also known as element 756, has sedem­sto päťdesiat­šesť protons in its nucleus, and sedem­sto päťdesiat­šesť electrons in its shells.