An element of group VIIA (a. k. a. Group 18). The name means "salt former" halogens react with metals to form binary ionic compounds. Fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At) are known at this time.
HALOGEN (GROUP VIIA; GROUP 18)
Meaning of HALOGEN (GROUP VIIA; GROUP 18) in English
General chemistry English glossary. Английский глоссарий общей химии. 2012