In case TS is too lazy to even click, i copied part of wiki
page
The halogens or halogen
elements are a series of nonmetal elements from Group
17 IUPAC
Style (formerly: VII, VIIA) of the periodic table,
comprising fluorine,
(F);chlorine, (Cl); bromine, (Br); iodine, (I); and astatine, (At). The
undiscovered element 117, temporarily named ununseptium, may also be a
halogen.
The term 'halogen' originates from 18th century
scientific French nomenclature
based on adaptations of Greek roots: hals (sea)
or halas (salt),
and gen- (to generate)—referring
to elements which produce a salt in union with
a metal.
