Listed below are pairs of carbonium ions, which are interconvertible by a hydride shift. Tell for each pair in which case B → A rearrangement takes place. A B I st Pair Me2CHCH2+ Me \overset{+}{C} IInd Pair MeCH2CH2+ Me \overset{+}{C} HMe IIIrd Pair \left(MeCH\right)_{2} \left(CH\right)_{2} \overset{+}{C} \left(HCH\right)_{3} \left(MeCH\right)_{2} \left(CH\right)_{2} \left(CH\right)_{2} \overset{+}{C} H

Engineering

Chemistry

Basic Concepts of GOC

Rearrangement of carbocation

Carbocation

Question

Listed below are pairs of carbonium ions, which are interconvertible by a hydride shift. Tell for each pair in which case B → A rearrangement takes place.

	A	B
I st Pair	Me₂CHCH₂⁺	$Me \overset{+}{C}$
IInd Pair	MeCH₂CH₂⁺	$Me \overset{+}{C} HMe$
IIIrd Pair	_{${MeCH}_{2} {CH}_{2} \overset{+}{C} {HCH}_{3}$}	_{${MeCH}_{2} {CH}_{2} {CH}_{2} \overset{+}{C} H_{2}$}

3rd Pair

Ist Pair

All

2nd Pair

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IIIrd Pair ${MeCH}_{2} {CH}_{2} \overset{+}{C} {HCH}_{3}$ ${MeCH}_{2} {CH}_{2} {CH}_{2} \overset{+}{C} H_{2}$