What is Unseptbium?
{{Infobox unseptbium}} [[File:Electron shell 172 Unseptbium - no label.svg|thumb|right|Bohr diagram of Unseptbium]] '''Unseptbium''' is a hypothetical [[chemical element]] with [[atomic number]] 172. Based on the trends of the [[periodic table]], it would likely be a [[noble gas]]. It has the symbol '''Usb'''. ==Related pages== *[[Unsepttrium]] [[Category:Hypothetical chemical elements]]