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Give the stability order of the followin...

Give the stability order of the following compounds.

A

I `gt` II `gt` III `gt` IV

B

IV `gt` I `gt` II `gt` III

C

IV `gt` I `gt` III `gt` II

D

IV `gt` II `gt` I `gt` III

Text Solution

Verified by Experts

The correct Answer is:
C
More is `+I` effect more is stability.
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BRILLIANT PUBLICATION-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM) -LEVEL-II (ASSERTION-REASON TYPE)
  1. Give the stability order of the following compounds.

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  2. Assertion : Simple carbanions are usually pyramidal but allyl carbanio...

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  3. Assertion : All the carbon atoms of but-2-ene lie in one plane. Reas...

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  4. Assertion : A free radical is paramagnetic species. Reason : A free ...

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  5. Assertion : Tertiary carbocations are generally formed more easily tha...

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  6. Assertion : tert-Butyl carbanion is more stable than methyl carbanion....

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  7. Assertion : The order of stability of carbocations are R(3)C^(+)gtR(2)...

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  8. Assertion : 1^(@) allylic halides are more reactive than 1^(@) RX in S...

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  9. Assertion : Crown ether acts as phase transfer catalysis and increases...

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  10. Assertion : RS^(Theta) is a stronger nucleophile and a better leaving ...

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  11. Assertion : E(1)cB reaction is favoured by stabilisation of carbanion ...

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  12. Assertion : Inductive effect is responsible for the dipole moment in t...

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  13. Assertion : A carbanion is pyramidal in shape like NH(3) and amines. ...

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  14. Assertion : Hybridisation influences the bond length and bond enthalpy...

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  15. Assertion : Rotation about C = C is restricted. Reason : Electron ch...

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  16. Assertion : Heterolytic fission involves breaking of bond in such a wa...

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  17. Assertion : The order of reactivity of carbocations is 3^(@)gt2^(@)1^(...

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  18. Assertion : When inductive and electromeric effects operate in opposit...

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  19. Assertion : 1^(@) allylic halides are more reactive than 1^(@) RX in S...

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  20. Assertion : Rate of ethanolysis of 1^(@) halide by S(N)1 mechanism is...

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  21. Assertion : Allyl and benzyl carbonium ions are more stable than propy...

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