why are halogens used

The presence of halogens in any organic compound is detected by using sodium extract (Lassaigne's extract) with silver nitrate as follow..

Alkenes react with halogens to form dihaloalkanes. The order of reactivity is, chlorine > bromine > iodine. Simply mixing together the two reactants, usually in an inert solvent like carbon tetrachloride, best carries out the reaction. Alkene ..

Haloarenes react with halogens in the presence of ferric salt as catalyst to give ortho para isomers...

In acetic acid, halogen atoms successively replace the three hydrogen atoms of the alkyl group. ..

The elements placed in group VIIA of the periodic table are called halogens. All these elements form salts called halides, e.g. NaCl, NaI, KCl, KI etc. Halogen is an ancient Greek word meaning 'salt producer'. Halogens have seven electrons in their valence shell and s..

Halogens..

Halogens..

..

..