halogeeniyhmä
Halogeeniyhmä, known in English as the halogen group, refers to the elements found in Group 17 of the periodic table. These elements include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). The name "halogen" comes from Greek and means "salt-former," a nod to the fact that these elements readily react with metals to form salts.
Halogens are highly reactive nonmetals. Their reactivity stems from their electron configuration, which has seven valence
The physical properties of the halogens vary significantly with increasing atomic number. Fluorine is a pale
Halogens play vital roles in various applications. Chlorine is used in disinfectants and to produce plastics.