# What do halogens include?

The $\text{halogens}$, literally the salt-forming elements are those elements that lie in Group 17 of the Periodic Table.
And the $\text{halogens}$ include, fluorine, chlorine, bromine, iodine, and astatine. Fluorine is the most reactive element on the Periodic Table. As the elements, at room temperature and pressure, the halogens can be gases, liquids, or solids. These elements are binuclear, i.e. ${X}_{2}$ under normal conditions.