Home
Class 11
CHEMISTRY
The order of decreasing stability of the...

The order of decreasing stability of the following carbanions is
(i) `(CH_(3))_(3)C^(-)`
(ii) `(CH_(3))_(2)CH^(-)`
(iii) `CH_(3)CH_(2)^(-)`
(iv) `C_(6)H_(5)CH_(2)^(-)`

A

(i)gt(ii)gt(iii)gt(iv)

B

(iv)gt(iii)gt(ii)gt(i)

C

(iv)gt(i)gt(ii)gt(iii)

D

(iii)gt(ii)gt(i)gt(Iv)

Text Solution

Verified by Experts

The correct Answer is:
B
Stability of carbanions decreases with increase in `+I` effect. +I effect is maximum in `(CH_(3))_(3)C^(-)`, followed by `(CH_(3))_(2)CH^(-) and CH_(3)CH_(2)^(-)`. In `C_(6)H_(5)CH_(2)^(-)`, resonance effect increases the stability. Hence, the order of stability is (iv)gt(iii)gt(ii)gt(i)
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

    NCERT FINGERTIPS|Exercise Methods Of Purification Of Organic Compounds|6 Videos

  • ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

    NCERT FINGERTIPS|Exercise Qualitative Analysis Of Organic Compounds|8 Videos

  • ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

    NCERT FINGERTIPS|Exercise Isomerism|6 Videos

  • HYDROGEN

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • PRACTICE PAPER 1

    NCERT FINGERTIPS|Exercise Practice Paper 1|44 Videos

Similar Questions

Explore conceptually related problems

The order of decreasing stability of the carbanions : (CH_(3))_(3)C^(-)(I),(CH_(3))_(2)CH^(-)(II), CH_(3)CH_(2)^(-)(III), C_(6)H_(5)CH_(2)^(-)(IV) is

What will be the increasing order of the stability of the following alkenes? i) H_(2)C=CH_(2) ii) CH_(3)CH=CH_(2) iii) CH_(3)CH_(2)CH=CH_(2) iv) (CH_(3))_(2)CHCH=CH_(2) v) (C)CH=CH_(2)

The S_(N^(1)) reactivity of the following halides will be in the order: (i) (CH_(3))_(3)C-Br (ii) (C_(6)H_(5))CHBr (iii) (C_(6)H_(5))_(2)C(CH_(3))Br (iv) (CH_(3))_(2)CHBr (v) C_(2)H_(5)Br

NCERT FINGERTIPS-ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES -Fundamental Concepts In Organic Chemistry
  1. Point out the incorrect statement about resonance?

    Text Solution

    |

  2. Which of the following is not structure of nitromethane molecule?

    Text Solution

    |

  3. Which of the following ions is the most resonance stabilised?

    Text Solution

    |

  4. Hyperconjugation is

    Text Solution

    |

  5. Stability of iso-butylene can be best explaned by

    Text Solution

    |

  6. In which of the following species hyperconjugation in possible?

    Text Solution

    |

  7. Hyperconjugation is not possible in

    Text Solution

    |

  8. Decreasing order of stability of following alkenes is (i) CH(3)-CH=C...

    Text Solution

    |

  9. Which of the following alcohols on dehydration gives most stable carbo...

    Text Solution

    |

  10. Stability of alkyl carbocations can be explained by

    Text Solution

    |

  11. The carbocation CH(3)overset(+)(C)HCH(3) is less stable than

    Text Solution

    |

  12. Which of the following statements is not true about the stability of c...

    Text Solution

    |

  13. Which of the following carbanion expected to be most stable?

    Text Solution

    |

  14. The order of decreasing stability of the following carbanions is (i)...

    Text Solution

    |

  15. Free radicals can undergo

    Text Solution

    |

  16. The most stable free radical among the following is

    Text Solution

    |

  17. Which of the following is a characteristic feature of a free radical?

    Text Solution

    |

  18. The increasing order of stability of the following free radicals is

    Text Solution

    |

  19. Which of the following is a false statement?

    Text Solution

    |

  20. Which type of intermediate (A) is formed during the reaction? CH(3)C...

    Text Solution

    |