The halogens are a group of elements in the periodic table that share similar chemical properties. Here's the list:

* Fluorine (F)

* Chlorine (Cl)

* Bromine (Br)

* Iodine (I)

* Astatine (At)

These elements are highly reactive and form salts with metals. They exist as diatomic molecules (two atoms bonded together) in their natural state.