Identify the primary halide among the followi | vedclass

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Question

(A) primary $(1^{\circ})$ halide is one in which the halogen atom is attached to a primary carbon atom (a carbon atom bonded to only one other carbon

Vedclass · Accepted Answer

$1-$bromo-but$-2-$ene

Vedclass · Answer

(A) primary $(1^{\circ})$ halide is one in which the halogen atom is attached to a primary carbon atom (a carbon atom bonded to only one other carbon atom). Let us analyze the structures: $A$. $1-$bromo-but$-2-$ene: $CH_2(Br)-CH=CH-CH_3$. The $Br$ is attached to a $CH_2$ group,which is bonded to only one carbon atom. Thus,it is a primary halide. $B$. $4-$bromo-pent$-2-$ene: $CH_3-CH=CH-CH_2-CH_2(Br)$. This is also a primary halide,but $1-$bromo-but$-2-$ene is the most standard example of an allylic primary halide. $C$. $2-$bromo$-2-$methylpropane: $(CH_3)_3C-Br$. The $Br$ is attached to a tertiary carbon. $D$. $t-$butyl bromide: $(CH_3)_3C-Br$. This is the same as $C$,a tertiary halide. Therefore,$1-$bromo-but$-2-$ene is a primary halide.

Column-$I$ (Structure)	Column-$II$ (Hybridization)
$A$. $CH_3CH_2Cl$	$i$. $sp$
$B$. $CH_2=CHCl$	$ii$. $sp^2$
$C$. $CH_2=CH-CH_2Cl$	$iii$. $sp^3$
$D$. Chlorobenzene	$iv$. $sp^3d$

Identify the primary halide among the following compounds.

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