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Considering the following alkene: Th...

Considering the following alkene:

The correct decreasing order of stability is:
`{:(underset("(I)")underset("But-l-ene")(CH_(3)CH_(2)=CH_(2))", "underset("(II)")underset("2,3-Dimethylbut-2-ene")((CH_(3))_(2)C=C(CH_(3))_(2)",")),(underset("(III)")underset("2-Methylbut-2-ene")((CH_(3))_(2)C=CHCH_(3))", "underset("(IV)")underset("2-Methylpropene")((CH_(3))_(2)C=CH_(2))):}`

A

I gt II gt III gt IV

B

II gt III gt IV gt I

C

IV gt III gt II gt I

D

III gt IV gt I gt II

Text Solution

Verified by Experts

Hint - More substituted alkene has the greater number of hypercojugative `C-H `bonds and so greater is the stability of alkenes.
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Arrange the following alkenes in the decreasing order of stability: (I) underset(CH_(3)C=CHCH_(3))underset(|)(CH_(3)) (II) underset(CH_(3)CHCH=CH_(2))underset(|)(CH_(3)) (III) underset(CH_(2)=CHCH_(2)CH_(3))underset(|)(CH_(3))

CH_(2)=CHCH_(2)CH_(2)underset(O)underset(||)(C)CH_(3)

Arrange the following carbonium ions in order of decreasing stability : underset(I)underset()((CH_(3))_(3)overset(+)C)" "underset(II)underset()((CH_(3))_(2)overset(+)CH)" "underset(III)underset()(CH_(3)overset(+)CH_(2))" "underset(IV)underset()(overset(+)H_(3)C)

Stability of pi -bond in following alkenes in the increasing order is : underset("(I)")CH_(3)-CH=CH-CH_(3)" "underset("(II)")(CH_(3)-underset(CH_(3))underset(|)C=underset(CH_(3))underset(|)C-CH_(3))" "underset("(III)")(CH_(3)-underset(CH_(3))underset(|)C=CH_(2))" "underset("(IV)")(CH_(3)-underset(CH_(3))underset(|)C=CH-CH_(3))

Arrange the following free radicals in order of stability underset(I)underset()((CH_(3))_(3)overset(cdot)C)" "underset(II)underset()((CH_(3))_(2)overset(cdot)CH)" "underset(III)underset()(CH_(3)overset(cdot)CH_(2))" "underset(IV)underset()(overset(cdot)CH_(3))

The stability of carbocations underset(I)underset()((CH_(3))_(3)C^(oplus))" "underset(II)underset()((CH_(3))_(2)overset(oplus)C(OCH_(3)))" "underset(III)underset()(CH_(3)CH_(2)CH_(2)overset(oplus)CH_(2))" "underset(IV)underset()(CH_(3)overset(oplus)CHCH_(2)CH_(3)) follows the order

CH_(3)underset(NH_(2))underset(|)(CH)-CH_(2)CH_(2)underset(OH)underset(|)CHCH _(2)CH_(3)

Arrange the following carbocations in order of increasing stability : {:(underset("(I)")((CH_(3))_(3)Coverset(+)CH_(2))", "underset("(II)")((CH_(3))_(3)overset(+)C)","),(underset("(III)")(CH_(3)CH_(2)overset(+)CH_(2))", "underset("(IV)")(CH_(3)overset(+)CHCH_(2)CH_(3))):}

CH_(2)=underset(CH_(3))underset(|)(C)-COO-CH_(3)

OP TANDON-BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)-ILLUSTRATIONS OF OBJECTIVE QUESTIONS
  1. Among the following which acid is strongest?

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  2. Which of the following acid is strongest?

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  3. Which of the following alkyl groups has the maximum +I effect?

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  4. Considering the following alkene: The correct decreasing order of ...

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  5. The decreasing order of basic strength in {:(C(6)H(5)NH(2)",",(C(6)H...

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  6. Benzyne is:

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  7. Which of the following is true about the cycloheptatrienyl free radica...

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  8. Heterolysis of propane gives:

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  9. Which of the following pairs of ions is more stable? (a) CH(3)CH(2)O...

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  10. Which among the following compounds behave both as an electrophile as ...

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  11. Which of the following species is an ambident nucleophile?

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  12. Consider the following carbanions: Correct decreasing order of st...

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  13. Which one of the following carbocations are most stable?

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  14. Which of the following is not a nucleophile ?

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  15. Nucleophilicity of which species is least?

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  16. The nitration of benzene is :

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  17. Classify the following as electrophiles and nucleophiles: (a) CN^(-)...

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  18. Which of the following most readily undergoes E(2) elimination with a ...

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  19. In the reaction: the product formed will be:

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  20. Which of the following alkene is most statble?

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