Group 17 or vii contain element like fluorine, chlorine, bromine, iodine and astatine
explanation
- Group 17 element in periodic table are referred to as halogen.
- They have 7 valence electron
- They are highly reactive
- Have a low melting and boiling point but increases down the group
- They have a tendency to form salt
- There electronegativity decreases down the group.
