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Arrage the following cations in decreasi...

Arrage the following cations in decreasing order of stability:

`CH_(2)=CHunderset((Q))-overset(o+)CH_(2)`
`Ph-underset((R))overset(o+)CH_(2)`
`CH_(3)-underset((S))overset(o+)CH_(2)`

A

`PgtRgtQgtS`

B

`RgtPgtSgtQ`

C

`RgtPgtSgtQ`

D

`PgtQgtSgtR`

Text Solution

Verified by Experts

The correct Answer is:
A
P is most stabilise as it is aromatic.
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CH_(3)-underset(CH_(3))underset(|)(CH)-CH=CH-CH_(2)-overset(O)overset(||)(C)-OH

Arrange the following compounds in decreasing order of nucleophilic addition reaction : CH_(3)-underset("I")overset(O)overset(||)C-CH_(3)" "CH_(3)-underset("II")overset(O)overset(||)C-Cl" "CH_(3)-underset("III")overset(O)overset(||)C-OH " "CH_(3)-overset(O)overset(||)underset(IV)C-NH_2 " "CH_(3)-overset(O)overset(||)C-underset(V)O-overset(O)overset(||)C-CH_(3)

Knowledge Check

  • Arrange the following carbanions in decreasing order of stability: CH_(2)underset((P))=overset(Ɵ)CH Ph-underset((Q))overset(Ɵ)CH_(2) CH_(2)=underset((R))CH-overset(Ɵ)CH_(2)

    A
    `PgtQgtRgtS`
    B
    `SgtQgtPgtR`
    C
    `SgtQgtRgtP`
    D
    `QgtSgtRgtP`

  • Arrange the following anions in decreasing order of stability : H-overset(O)overset(||)C-underset((P))overset(Ɵ)CH-overset(O)overset(||)C-H CH_(3)-overset(O)overset(||)C-underset((Q))overset(Ɵ)CH-overset(O)overset(||)C-H CH_(3)-overset(O)overset(||)C-overset(Ɵ)CHunderset((R))-overset(O)overset(||)C-underset(* *)overset(* *)O-CH_(3)

    A
    `RgtQgtP`
    B
    `QgtRgtP`
    C
    `PgtRgtQ`
    D
    `PgtQgtR`

  • What is the correct order of decreasing stability of the following cations H_(3)C-underset((I))overset(o+)(CH)-CH_(3) , H_(3)C-underset((II))overset(o+)(CH)-OMe H_(3)C-underset((III))overset(o+)(CH)-CH_(2)-OMe

    A
    `IIgtIgtIII`
    B
    `IIgtIIIgtI`
    C
    `IIIgtIgtII`
    D
    `IgtIIgtIII`

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