Among the following, total number of meta directing functional groups is (Integer based): -textOCH_3$-\text{OCH}_3$, -textNO_2$-\text{NO}_2$, -textCN$-\text{CN}$, -textCH_3$-\text{CH}_3$, -textNHCOCH_3$-\text{NHCOCH}_3$, -textCOR$-\text{COR}$, -textOH$-\text{OH}$, -textCOOH$-\text{COOH}$, -textCl$-\text{Cl}$

### Core Logic Meta-directing functional groups are electron-withdrawing groups via resonance or induction effects (-M$-M$ or -I$-I$). Let's audit the list: - -textOCH_3 rightarrow textortho/para$-\text{OCH}_3 \rightarrow \text{ortho/para}$ (+M$+M$) - -textNO_2 rightarrow textmeta$-\text{NO}_2 \rightarrow \text{meta}$ (-M, -I$-M, -I$) - -textCN rightarrow textmeta$-\text{CN} \rightarrow \text{meta}$ (-M, -I$-M, -I$) - -textCH_3 rightarrow textortho/para$-\text{CH}_3 \rightarrow \text{ortho/para}$ (+I$+I$, hyperconjugation) - -textNHCOCH_3 rightarrow textortho/para$-\text{NHCOCH}_3 \rightarrow \text{ortho/para}$ (+M$+M$) - -textCOR rightarrow textmeta$-\text{COR} \rightarrow \text{meta}$ (-M, -I$-M, -I$) - -textOH rightarrow textortho/para$-\text{OH} \rightarrow \text{ortho/para}$ (+M$+M$) - -textCOOH rightarrow textmeta$-\text{COOH} \rightarrow \text{meta}$ (-M, -I$-M, -I$) - -textCl rightarrow textortho/para$-\text{Cl} \rightarrow \text{ortho/para}$ (+M$+M$ counteracted by strong -I$-I$) The meta-directing groups are -textNO_2$-\text{NO}_2$, -textCN$-\text{CN}$, -textCOR$-\text{COR}$, and -textCOOH$-\text{COOH}$. ### Pattern Recognition Groups whose attachment atom carries a double or triple bond to an electronegative element typically function as meta-directors. ### Chapter Mix Class 11 Chemistry: Organic Chemistry - Some Basic Principles and Techniques Class 12 Chemistry: Haloalkanes and Haloarenes