Explain Group 17 elements.

1.	Explain Group 17 elements.
Answer» Explain Group 17 elements.These five TOXIC, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (BR), iodine (I), and ASTATINE (At). ... Because the halogen elements have SEVEN valence electrons, they only require one additional electron to form a full octet.

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