Final answer:
Group 17 of the periodic table consists of the halogens: fluorine, chlorine, bromine, iodine, and astatine.
Explanation:
Group 17 of the periodic table consists of the halogens, which are highly reactive nonmetals. The elements in this group include fluorine, chlorine, bromine, iodine, and astatine. They have seven electrons in their outermost energy level, leading to similar chemical properties.
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