The order of decreasing reactivity towards an | vedclass

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(C) The reactivity towards electrophilic aromatic substitution depends on the electron density of the benzene ring.$1$. Phenol $(C_6H_5OH)$ has an $-O

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$(iv) > (ii) > (i) > (iii)$

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(C) The reactivity towards electrophilic aromatic substitution depends on the electron density of the benzene ring.$1$. Phenol $(C_6H_5OH)$ has an $-OH$ group,which is a strong activating group due to its strong $+M$ (mesomeric) effect,making it the most reactive.$2$. Toluene $(C_6H_5CH_3)$ has a $-CH_3$ group,which is an activating group due to $+I$ (inductive) and hyperconjugation effects,making it more reactive than benzene.$3$. Benzene $(C_6H_6)$ is the reference compound.$4$. Chlorobenzene $(C_6H_5Cl)$ has a $-Cl$ group,which is deactivating due to its strong $-I$ effect,although it is ortho/para-directing due to the $+M$ effect. Overall,it is less reactive than benzene.Thus,the correct order of decreasing reactivity is: $(iv) > (ii) > (i) > (iii)$.

The order of decreasing reactivity towards an electrophilic reagent for the following compounds is:
$(i)$ Benzene
$(ii)$ Toluene
$(iii)$ Chlorobenzene
$(iv)$ Phenol

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The order of decreasing reactivity towards an electrophilic reagent for the following compounds is:$(i)$ Benzene$(ii)$ Toluene$(iii)$ Chlorobenzene$(iv)$ Phenol