Where did the Halogen family get their names?

Answer 1

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.

Answer 2

The Halogen family (fluorine, chlorine, bromine, iodine, astatine) gets their names from the Greek words for "salt-forming." Halogen elements are highly reactive and readily form salts in combination with metals.