* Bromine (Br): Bromine is located directly below chlorine in the periodic table, in the same group (halogens). Like chlorine, it is a nonmetal, has a high electronegativity, and forms salts with metals.
* Fluorine (F): Fluorine is located directly above chlorine in the periodic table, also in the halogen group. It shares many similarities with chlorine, including its high reactivity and ability to form strong acids.
Both bromine and fluorine have similar chemical properties to chlorine due to their shared electron configuration and the presence of seven valence electrons, making them highly reactive and prone to forming negative ions.
