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Consider the following carbocations (I...

Consider the following carbocations
(I)`C_(6)H_(5)overset(+)CH_(2)` , (II)`C_(6)H_(5)CH_(2)overset(+)CH_(2)`
(III)`C_(6)H_(5)overset(+)CHCH_(3)` , (IV) `C_(6)H_(5)overset(+)C(CH_(3))_(2)`
The correct sequence for the stability of these is

A

(II) lt (I) lt (III) lt (IV)

B

(I) lt (II) lt (III) lt (IV)

C

(III) lt (II) lt (I) lt (IV)

D

(IV) lt (I) lt (III) lt (I)

Text Solution

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The correct Answer is:
A
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Consider the following carbocations : (I) C_(6)H_(5)overset(+)(C )H_(2) (II) C_(6)H_(5)CH_(2)overset(+)(C )H_(2) (III) C_(6)H_(5)overset(+)(C )HCH_(3) (IV) C_(6)H_(5)overset(+)(C )(CH_(3))_(2) The correct sequance of the stability of these is :

Consider the following carbocation- (a). CH_(3)-overset(o+)(C)H_(2) (b). CH_(2)=overset(o+)(C)H (c). CH_(2)=CH-overset(o+)(C)H_(2) (d). C_(6)H_(5)-Coverset(o+)(H)_(2)

Consider the following structure {:(underset("I")(CH_(2)C=overset(+)CH)" , "underset("II")(CH_(3)-overset(+)CH_(2))),(underset("III")(H_(2)C=CH-overset(+)CH_(2))" , "underset("IV")(C_(6)H_(5)-overset(+)CH-C_(6)H_(5))):} The correct sequence of these carbocations in the decreasing order of their stability is :

Decreasing order of stability of the following carbocation ? (A) m-(HO)-C_(6)H_(4)-overset(o+)CH_(2) (B) p-(OH)-C_(6)H_(4)-overset(o+)(CH_(2)) (C ) p-(CHO)-C_(6)H_(4)-overset(o+)(CH_(2)) (D) C_(6)H_(5)-overset(o+)(CH_(2))

Consider the following carbocations 1 . C_6H_5overset(+)CH_2 2. C_6H_5overset(+) CHCH_3 3 (C_6H_5)_2overset(+)CH 4. (C_6H_5)_3 overset(+)(C) The correct sequence of increasing order of thir stabilities is

Rank the following free radicals in order of decreasing stability (I)C_(6)H_(5) " "overset(.)CHC_(6)H_(5)" "(II)C_(6)H_(5)- overset(.)CH - CH = CH_(2) (III)CH_(3)-overset(.)CH - CH_(3)" "(IV) C_(6)H_(5)- overset(.)CH - CH_(3) (V) CH_(3)CH " "CHCH_(2)overset(.)CH_(2) (VI) CH_(3) - CH_(2) - underset(CH_(3))underset(|)overset(.)C-CH_(3)

The order of stability of the following carbocations: underset("I")(CH_(2)C=CH-overset(o+)CH_(2))" , "underset("II")(CH_(3)-CH_(2)-overset(o+)CH_(2))" , "underset("III")(C_(6)H_(5)-overset(o+)CH_(2))

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