Chemistry Exam  >  Chemistry Questions  >  Which of the following form stable for CN&mda... Start Learning for Free
Which of the following form stable for CN—CH2—CH2—CN?           
  • a)
    Anti-form                   
  • b)
    Partially-eclipsed           
  • c)
    Gauche-form           
  • d)
    Eclipsed-form
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following form stable for CN—CH2—CH2—CN...
Correct answer is Option (C).

Explanation:

In the given molecule CN—CH2—CH2—CN, we can analyze the stable conformations based on the dihedral angle between the CN groups. The conformations are:

A: Gauche-form
- In this conformation, the dihedral angle between the CN groups is around 60°.
- The molecule will have a slight steric hindrance between the CN groups as they are close to each other.
- This form is not the most stable conformation.

B: Partially-eclipsed
- In this conformation, the dihedral angle between the CN groups is around 120°.
- The molecule will have a moderate steric hindrance between the CN groups.
- This form is less stable than the anti-form.

C: Anti-form
- In this conformation, the dihedral angle between the CN groups is 180°.
- This conformation has the least steric hindrance between the CN groups as they are farthest apart.
- This form is the most stable conformation.

D: Eclipsed-form
- In this conformation, the dihedral angle between the CN groups is 0°.
- The molecule will have maximum steric hindrance between the CN groups as they are directly overlapping.
- This form is the least stable conformation.

Hence, the most stable conformation for the given molecule CN—CH2—CH2—CN is the anti-form (Option C), where the dihedral angle between the CN groups is 180° and there is minimum steric hindrance.
Free Test
Community Answer
Which of the following form stable for CN—CH2—CH2—CN...
Correct answer is Option (C).

Explanation:

In the given molecule CN—CH2—CH2—CN, we can analyze the stable conformations based on the dihedral angle between the CN groups. The conformations are:

A: Gauche-form
- In this conformation, the dihedral angle between the CN groups is around 60°.
- The molecule will have a slight steric hindrance between the CN groups as they are close to each other.
- This form is not the most stable conformation.

B: Partially-eclipsed
- In this conformation, the dihedral angle between the CN groups is around 120°.
- The molecule will have a moderate steric hindrance between the CN groups.
- This form is less stable than the anti-form.

C: Anti-form
- In this conformation, the dihedral angle between the CN groups is 180°.
- This conformation has the least steric hindrance between the CN groups as they are farthest apart.
- This form is the most stable conformation.

D: Eclipsed-form
- In this conformation, the dihedral angle between the CN groups is 0°.
- The molecule will have maximum steric hindrance between the CN groups as they are directly overlapping.
- This form is the least stable conformation.

Hence, the most stable conformation for the given molecule CN—CH2—CH2—CN is the anti-form (Option C), where the dihedral angle between the CN groups is 180° and there is minimum steric hindrance.
Explore Courses for Chemistry exam
Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer?
Question Description
Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry. Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following form stable for CN—CH2—CH2—CN?a)Anti-formb)Partially-eclipsedc)Gauche-formd)Eclipsed-formCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Chemistry tests.
Explore Courses for Chemistry exam
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