__ Family, Group 17 of Periodic Table, E.g. Cl, F
Puzzle 2 of Periodic Table Medium Pack
Question is: __ Family, Group 17 of Periodic Table, E.g. Cl, F
and the answer is: HALOGEN
Word Meaning:
HALOGEN — (chemistry) Any element of group 17, i.e. fluorine, chlorine, bromine, iodine, astatine and tennessine.
Definitions from Wiktionary.