MCQ
Which of the following is most stable conformer of Butane ?
  • A


  • C

  • D

Answer

Correct option: B.

b
The anti staggered conformation of $n$-butane is more stable than gauche staggered and eclipsed conformations of n-butane. In anti staggered $n$-butane, the methyl groups are placed at a dihedral angle of $180^{\circ}$, and the steric hindrance is minimal in anti-form than in gauche form.

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