Halogens mean constituents of sugar
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Halogens are non-metallic elements that are found in the seventh column of the periodic table.
Halogens include fluorine, chlorine, bromine, iodine, and astatine.
Astatine is the only semi-metal in this group.
Halogens form salts by direct combination with a metal and are found in all three states of matter; Solid, liquid and gaseous.
They are known to have seven valence electrons and are usually found as diatomic molecules (i.e. I2).
When the atomic number of the halogens increases, the reaction takes place gradually.
