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The Stability of Follow the order...

The Stability of

Follow the order

A

I gt II gt III

B

II gt I gt III

C

II gt III gt I

D

III gt II gt I

Text Solution

Verified by Experts

The correct Answer is:
B

stability : II > I > III Note : In III carbocation is localised due to S.I.R. effect
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Knowledge Check

  • Consider the following carbocations. (i) Cl_(3)overset(+)(C) (ii) Cl_(2)overset(+)(C)H (iii) ClCH_(2)^(+) (iv) overset(+)(C)H_(3) The stability sequence follows the order :

    A
    `(iv) lt (i) lt (ii) lt (iii)`
    B
    `(i) lt (ii) lt (iii) lt (iv)`
    C
    `(iv) lt (i) lt (iii) lt (ii)`
    D
    `(iv) lt (ii) lt (i) lt (iii)`

  • Stability of carbanion follows the order.

    A
    Q gt P gt S gt R
    B
    Q gt P gt R gt S
    C
    P gt Q gt R gt S
    D
    P gt Q gt S gt R

  • The stability of the hydrides follows the order

    A
    `NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3)`
    B
    `NH_(3) lt PH_(3) lt SbH_(3) gt AsH_(3)`
    C
    `PH_(3) gt NH_(3) gt AsH_(3) gt SbH_(3)`
    D
    `AsH_(3) gt NH_(3) gt PH_(3) gt SbH_(3)`

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