List of Halogen Published on: April 9, 2020 | Last Updated on: August 15, 2023 by Fraiser Moorhouse Group of element – Halogen NameSymbolAtomic NumberAtomic weigthFluorineF918.9984032ChlorineCl1735.4527BromineBr3579.904IodineI53126.90447AstatineAt85-209.9871