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Which of the following is correct regard...

Which of the following is correct regarding stability of conformations of n-butane about `C_(2)-C` bond
Anti (I) gauche (II) partially eclipsed (III) fülly eclipsed (IV)

A

I gt II gt III gt IV

B

I gt II gt IV gt III

C

IV gt III gt II gt I

D

IV gt II gt I gt III

Text Solution

Verified by Experts

The correct Answer is:
A
Dihedral angle is inversely proportional to stability of conformer. Dihedral angles for fully eclipsed (IV), gauche (II) , partially eclipsed (III) and anti (I) are 0,60 , 120, 180 respectively
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AAKASH SERIES-ISOMERISM -LECTURE SHEET (EXERCISE-II (STRAIGHT OBJECTIVE TYPE QUESTIONS))
  1. In the given conformation C(2) is rotated about C(2)-C(3) bond by 120^...

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  2. The number of conformational isomers possible of n-butane about C(2)-C...

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  3. Which of the following is correct regarding stability of conformations...

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  4. Which of the following is the most stable conformer of 1, 2, 4 -trimet...

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  5. Choose the stable form of the compound given below in chair conformati...

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  6. Translating this eclipsed Newman projection formula of 2, 3 dibromobut...

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  7. Geometrical isomerism is possible about which of the following multipl...

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  8. Which of the following possess highest melting point

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  9. Number of possible geometrical isomers for 2, 4 - hexadjenie is

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  10. Which of the following statements is right regarding geometrical isome...

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  11. The IUPAC name of the compound given is

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  12. Which of the following order of stability is correct among these two i...

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  13. Which of the following does not show geometrical isomerism?

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  14. The name of the molecule shown is

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  15. Identify the pair of isomers which are geometrical isomers of each.

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  16. Which of the following cycloalkanes will show cis-trans isomerisin?

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  17. Which of the following compounds is Z-isomer

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  18. This compound is named in IUPAC as

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  19. CH(2)=CH-CH=CH-CH=CH-CH(3) How many geometrical isomers of this compou...

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  20. How many geometrical isomers of this compound are possible?

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