# What is the meaning of a “halide component” for Friedel–Crafts reaction? [closed]

Among the given halides, which one can be used as halide component for Friedel–Crafts reaction?

(a) Isopropyl chloride
(b) Bromobenzene
(c) Chlorobenzene
(d) Chloroethene

I don't understand what a "halide component" is. Is it the reactant that we use with existing molecule (a simple benzene ring, for example) on which we want to perform FC reaction on, or the reagent itself (i.e. anhyd. $$\ce{AlCl3}$$)?

• Obviously, none of these is AlCl3. Dec 1 '21 at 4:58
• Can you please elaborate? Dec 1 '21 at 5:24

$$\ce{R-X}$$
where $$\ce{R}$$ is the alkyl group and $$\ce{X}$$ is the halide (whatever it may be), I assume the question is asking what compound, of the previously noted form, could be added to an aromatic ring using electrophilic aromatic substitution.