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What Are Halogens?

Halogens are elements of group (VIIA) of the periodic table. They include Fluorine, Chlorine, Bromine and Iodine.

They produce salts when reacted with metals. The first in the group (fluorine) is the most reactive. It is so active that it reacts with almost anything it comes in contact with, even the glass container in which it is kept.

Hence, it is not stored, and is therefore of no practical importance in the laboratory.

Chlorine is used as a representative of the group. This is because it has common methods of preparation, and exhibits common properties with other members.