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Which is the correct order of stability ...

Which is the correct order of stability of carbanion
(I). `F-CH_(2)-CH_(2)-CH_(2)^(ɵ)`
(II). `O_(2)N-CH_(2)-CH_(2)-CH_(2)^(ɵ)`
(III). `Cl-CH_(2)-CH_(2)-CH_(2)^(ɵ)`
(IV). `Me_(3)overset(o+)(N)-CH_(2)-CH_(2)-CH_(2)^(ɵ)`

A

IgtIIIgtIIgtIV

B

IVgtIgtIIIgtII

C

IVgtIIgtIgtIII

D

IVgtIIIgtIgtII

Text Solution

Verified by Experts

The correct Answer is:
C
Stability of carbanion: Electron with drawing group increases the stability of carbanion.
order of -I effect or withdrawing group.
`overset(o+)(N)Me_(3) gt NO_(2) gt F gt Cl`
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CH_(3)-CH_(2)-CH_(2)-CH_(2)-OH to CH_(3)-CH_(2)-CH=CH_(2)+H_(2)O

The correct order of stability of given carbocations is (i) NO_(2)—CH_(2)—CH_(2)^(+) (ii) NH_(2)—CH_(2)—CH_(2)^(+) (iii) CH_(3)—O—CH_(2)^(+) (iv) HO—CH_(2)^(+) (v) NH_(2)—CH_(2)^(+) (vi) NO_(2)—CH_(2)^(+) (vii) CH_(3)O—CH_(2)—CH_(2)^(+)

Knowledge Check

  • The order of decreasing stability of the carbanions : (CH_(3))_(3)C^(-)(I),(CH_(3))_(2)CH^(-)(II), CH_(3)CH_(2)^(-)(III), C_(6)H_(5)CH_(2)^(-)(IV) is

    A
    `IgtIIgtIIIgtIV`
    B
    `IVgtIIIgtIIgtI`
    C
    `IVgtIgtIIgtIII`
    D
    `IgtIIgtIVgtIII.`

  • The order of decreasing stability of the carbanions (CH_(3))_(3) C^(-), (CH_(3))_(2) CH^(-) (II) , CH_(3) CH_(2)^(-) (III) , C_(6) H_(5) CH_(2) (IV) is

    A
    `I gt II gt III gt IV`
    B
    `IV gt III gt II gt I `
    C
    `IV gt I gt II gt III`
    D
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  • Arrange acididy of given compounds in decreasing order (I). CH_(3)-N-CH_(2)-OH (II). CH_(3)-NH-CH_(2)-CH_(2)-CH_(2)-OH (III). (CH_(3))_(3)overset(o+)(N)-CH_(2)-CH_(2)-OH

    A
    IIIgtIgtII
    B
    IIIgtIIgtI
    C
    IgtIIgtIII
    D
    IIgtIgtIII

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