Pentoctseptium (Pos)

Pentoctseptium is the systematic name of the theoretical 587. element in the periodic table with a symbol of Pos and atomic number of 587. Pentoctseptium, also known as element 587, has fënnef­honnert­siwenanachtzeg protons in its nucleus, and fënnef­honnert­siwenanachtzeg electrons in its shells.