The halogen elements are all: a. period vii atoms b. from group vii c. inert gases d. active metals

The elements of the group VII are named as halogens. These are all non-metallic elements and include Fluorine, Chlorine , Bromine, Iodine and Astatine. 
The inert gases are the group next to the halogens. So the correct answer to this question is Option B. 
Halogens are elements from group VII

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