Class 12 Exam  >  Class 12 Questions  >  Reactivity order of halides for dehydrohaloge... Start Learning for Free
Reactivity order of halides for dehydrohalogenation is [2002]
  • a)
    R – F > R – Cl > R – Br > R –I
  • b)
    R –I > R – Br > R – Cl > R – F
  • c)
    R –I > R – Cl > R – Br > R – F
  • d)
    R – F > R –I > R – Br > R – Cl
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Reactivity order of halides for dehydrohalogenation is [2002]a)R &ndas...
The order of atomic size of h alogen s decrease in the order I > Br > Cl > F i.e  on moving down a group atomic size increases. Further the bond length of C-X bond deccreases in the order C – I > C – Br > C – Cl > C – F and hence the bond dissociation energy decreases  in the order R – F > R – Cl > R – Br > R – I hence R – I being a weakest bond break most easily. Hence R – I is most reactive.
View all questions of this test
Most Upvoted Answer
Reactivity order of halides for dehydrohalogenation is [2002]a)R &ndas...

Reactivity order of halides for dehydrohalogenation

Understanding the reactivity order of halides for dehydrohalogenation is crucial in organic chemistry reactions. This order is determined by the stability of the corresponding alkene formed after the elimination reaction.

Factors affecting reactivity order:
- Size of halide ion: Larger halides such as iodide ions are more easily eliminated compared to smaller halides like fluoride ions.
- Bond strength: Weaker C-X bonds are easier to break, leading to higher reactivity.
- Stability of the resulting alkene: More stable alkenes are formed from more substituted carbons, leading to higher reactivity.

Reactivity order:
- R-I > R-Br > R-Cl > R-F

In the given options, option B is correct as it follows the reactivity order based on the factors mentioned above. Iodide ions are the most reactive due to their larger size and weaker bond strength, leading to the formation of stable alkenes. Fluoride ions, on the other hand, are the least reactive as they are smaller and have stronger C-F bonds, making dehydrohalogenation more challenging.
Explore Courses for Class 12 exam

Top Courses for Class 12

Question Description
Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Reactivity order of halides for dehydrohalogenation is [2002]a)R – F > R – Cl > R – Br > R –Ib)R –I > R – Br > R – Cl > R – Fc)R –I > R – Cl > R – Br > R – Fd)R – F > R –I > R – Br > R – ClCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam

Top Courses for Class 12

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev