Home
Class 11
CHEMISTRY
Why is the hyperconjugation effect exert...

Why is the hyperconjugation effect exerted by a methyl group greater than that exerted by an ethyl group?

Text Solution

Verified by Experts

`-CH_3` group contains three C-H bonds, while `-CH_2 CH_3` group contains only two C-H bonds at `alpha`- position when present in conjugation to a double bond.
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES

    ICSE|Exercise ESSAY ( LONG ANSWER ) TYPE QUESTIONS|42 Videos

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES

    ICSE|Exercise OBJECTIVE ( MULTIPLE CHOICE ) TYPE QUESTIONS|142 Videos

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES

    ICSE|Exercise VERY SHORT ANSWER TYPE QUESTIONS|87 Videos

  • HYDROGEN

    ICSE|Exercise NCERT TEXT-BOOK EXERCISE (With Hints and Solutions)|53 Videos

  • REDOX REACTIONS (OXIDATION AND REDUCTION)

    ICSE|Exercise NCERT TEXT-BOOK. EXERCISES ((With Hints and Solutions)|69 Videos

Similar Questions

Explore conceptually related problems

Maximum -I effect is exerted by the group

Why is +l-effect of t-butyl group greater than that of isopropyl group?

Why do we group data?

Assertion : The order of basic strength in case of methyl substituted and ethyl substituted amines in aqueous state is different . Reason : Methyl group has stronger inductive effect than ethyl group .

Why is the electron affinity of chlorine greater than that of fluorine ?

Why the size of the needle of a syringe controls flow rate better than the thumb pressure exerted by a doctor while administering an injection?

Methylation of diborane gives [Me = methyl group]

Hyperconjugation is defined as No bond resonance. The concept of hyperconjugation arose from the discovery of electron releasing pattern for alkyl groups. It involves sigma electrons of C-H bond. Greater the number of C-H bond ( alpha -hydrogen atom w.r.t. double bond) more will be hyperconjugative structures, more will be stability Heat of hydrogenation of alkene are affected by hyperconjugative effects. Which of the following is incorrect hyperconjugative structure?

Hyperconjugation is defined as No bond resonance. The concept of hyperconjugation arose from the discovery of electron releasing pattern for alkyl groups. It involves sigma electrons of C-H bond. Greater the number of C-H bond ( alpha -hydrogen atom w.r.t. double bond) more will be hyperconjugative structures, more will be stability Heat of hydrogenation of alkene are affected by hyperconjugative effects. Which of the following has highest heat of hydrogenation?

Why the boiling point of ethyl bromide is higher than that of ethyl chloride?

Knowledge Check

  • Maximum -I effect is exerted by the group

    A
    `-C_(6)H_(5)`
    B
    `-OCH_(3)`
    C
    `-Cl`
    D
    `-NO_(2)`
    • ICSE-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES -SHORT ANSWER TYPE QUESTIONS
    1. What do you understand by hyperconjugation effect ? Illustrate with an...

      Text Solution

      |

    2. Explain the Hyperconjugation effect is also termed as 'no bond reso...

      Text Solution

      |

    3. Why is the hyperconjugation effect exerted by a methyl group greater t...

      Text Solution

      |

    4. Define heterolytic fission of a covalent bond.

      Text Solution

      |

    5. Why is a 3^@ radical more stable as compared to 1^@ and 2^@ free r...

      Text Solution

      |

    6. What are carbocations ? Give two examples.

      Text Solution

      |

    7. Discuss the orbital structure of a carbocation.

      Text Solution

      |

    8. What is relative order of reactivity of various types of carbocations ...

      Text Solution

      |

    9. Define carbanion and discuss its orbital structure.

      Text Solution

      |

    10. Why is 1^@ carbanion more stable than a 2 carbanion ?

      Text Solution

      |

    11. What are carbenes ?

      Text Solution

      |

    12. What are electrophilic reagents ? Give at least three examples.

      Text Solution

      |

    13. Why do free radicals and carbenes act as electrophiles ?

      Text Solution

      |

    14. What do you understand by nucleophilic reagents and what type of speci...

      Text Solution

      |

    15. Why does ether act as a nucleophile ?

      Text Solution

      |

    16. What are nucleophilic substitution reactions ? Give an example.

      Text Solution

      |

    17. What are the reactive species involved in S(N^1) reactions ?

      Text Solution

      |

    18. Explain why does a S(N^2) reaction involve an inversion in configurati...

      Text Solution

      |

    19. Give three examples of electrophilic substitution reactions.

      Text Solution

      |

    20. Discuss the mechanism of anti-Markownikoff addition of HBr to an unsym...

      Text Solution

      |