Home
Class 11
CHEMISTRY
Assertion : Allyl and benzyl carbonium i...

Assertion : Allyl and benzyl carbonium ions are more stable than propyl carbonium ions.
Reason : Electron releasing group stabilises carbonium ion.

A

If both (A) and (R ) are correct and (R ) is the correct explanation of (A)

B

If both (A) and (R ) are correct, but (R ) is not the correct explanation of (A)

C

If (A) is correct, but (R ) is incorrect

D

If both (A) and (R ) are incorrect

Text Solution

Verified by Experts

The correct Answer is:
B

The stability of carbonium ion is influenced by both resonance and inductive effects. Propyl carbonium ion `(CH_(3)CH_(2)CH_(2)^(+))` has no resonating forms.
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM)

    BRILLIANT PUBLICATION|Exercise LEVEL-II|40 Videos
  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART I (NOMENCLATURE)

    BRILLIANT PUBLICATION|Exercise LEVEL-III|45 Videos
  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS)

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|15 Videos

Similar Questions

Explore conceptually related problems

Assertion : Tricyclopropyl methyl carbonium ion is more stable than tropylium ion. Reason : Stability of tricycle propyl methyl carbocation is a result of conjugation between the bent orbitals of cyclopropyl ring and the vacant p-orbital of cationic carbon. ( sigma - resonance) : Both assertion and reason are correct, reason is the correct explanation of assertion, Both assertion and reason are correct and reason is not the correct explanation of assertion, Assertion is true reason is false, Assertion is false reason is true

Aniline is more stable than anilinium ion because

Among the following the most stable carbonium ion is

Assertion : p-fluoroanilinium ion is more acidic than anilinium ion Reason : Electron density in the N-H bond of p-fluoroanilinium ion decreases and releases a proton more readily than from anilinium ion

The compound which gives the most stable carbonium ion on dehydration is:

BRILLIANT PUBLICATION-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM) -LEVEL-II (ASSERTION-REASON TYPE)
  1. Assertion : Simple carbanions are usually pyramidal but allyl carbanio...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |