Group 17 Elements

#	Symbol	Name	Atomic Mass	Category
9	F	Fluorine	18.998	Halogens
17	Cl	Chlorine	35.45	Halogens
35	Br	Bromine	79.904	Halogens
53	I	Iodine	126.904	Halogens
85	At	Astatine	210	Halogens
117	Ts	Tennessine	294	Halogens

6 elements