Good Safa
But I think halogen is deactivate groups
So benzene ring is weak group than halogen
Strong like OH and NH2
Moderate like methoxy and ethoxy
Weak like halogens
Good Safa
But I think halogen is deactivate groups
So benzene ring is weak group than halogen
Considering you are talking about electrophilic aromatic substitution, strong activating o,p- directing groups are e.g. OH, OR, NH2, NHR, NR2. Alkyl and RCONH- groups are moderately activating and o,p-directing. Halogens are also o,p-directing (by resonance effect) but deactivating (by inductive effect).
I almost agree with Abel J S C Vieira regarding this topic. If anything should be added, SH and SR could also be strong EDGs, OCOR,SCOR could also be moderate EDGs, and alkyls including CH2 tethering halo groups might be a weak EDG.
SH and SR could also be strong EDGs, OCOR,SCOR could also be moderate EDrawing Gs, and alkyls including CH2 tethering halo groups might be a weak EDG. but NH-R , OR , OH , are EDONATING GROUP
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