Identify the correct orders among the followi | vedclass

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(C) Stability of $CH_3-C^+=O$ vs $CH_3-C\equiv O^+$: The acylium ion $CH_3-C\equiv O^+$ is more stable because every atom has a complete octet,whereas

Vedclass · Accepted Answer

$B, C, D$

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(C) Stability of $CH_3-C^+=O$ vs $CH_3-C\equiv O^+$: The acylium ion $CH_3-C\equiv O^+$ is more stable because every atom has a complete octet,whereas $CH_3-C^+=O$ has an incomplete octet on carbon. Thus,the order is incorrect.$(B)$ Acidic strength: $2$-fluorobenzoic acid is a stronger acid than $2$-chlorobenzoic acid due to the stronger $-I$ effect of $F$ compared to $Cl$ and the ortho effect. The given order is incorrect.$(C)$ Bond length: In $N,N$-dimethyl-$2,6$-dimethylaniline,the $N-C$ bond length $(l_1)$ is longer than in $N,N$-dimethyl-$3,5$-dimethylaniline $(l_2)$ due to steric inhibition of resonance. The order is correct.$(D)$ Stability of phenoxide ions: The stability order of nitrophenoxide ions is $p$-nitrophenoxide $>$ $o$-nitrophenoxide $>$ $m$-nitrophenoxide. The given order is incorrect.Therefore,only $C$ is correct. However,based on the provided options,if we re-evaluate the question,$C$ is the only correct statement.

List-$I$ (Pair of Compounds)	List-$II$ (Type of Isomers)
$A$. $2-$Methylpropene and but$-1-$ene	$I$. Stereoisomers
$B$. $Cis-$but$-2-$ene and $trans-$but$-2-$ene	$II$. Position isomers
$C$. $2-$Butanol and diethyl ether	$III$. Chain isomers
$D$. But$-1-$ene and but$-2-$ene	$IV$. Functional group isomers

Identify the correct orders among the following:

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