Hexoctseptium (Hos)
Hexoctseptium is the systematic name of the theoretical 687. element in the periodic table with a symbol of Hos and atomic number of 687. Hexoctseptium, also known as element 687, has վեցհարյուր ութսունյոթ protons in its nucleus, and վեցհարյուր ութսունյոթ electrons in its shells.