Question:
Given below are two statements regarding conformations of n-butane. Choose the correct option.
\includegraphics[width=0.5\linewidth]{58.png}
Given below are two statements regarding conformations of n-butane. Choose the correct option.
\includegraphics[width=0.5\linewidth]{58.png}
\includegraphics[width=0.5\linewidth]{58.png}
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Anti-staggered conformations are always the most stable in alkanes.
Updated On: Feb 5, 2026
- Both Statement I and Statement II are false
- Statement I is false but Statement II is true
- Statement I is true but Statement II is false
- Both Statement I and Statement II are true
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The Correct Option is D
Solution and Explanation
Step 1: Stability of conformers.
In n-butane, the eclipsed conformation is the least stable due to maximum torsional strain, while the anti-staggered conformation is the most stable.
Step 2: Effect of dihedral angle.
As the dihedral angle increases from eclipsed to staggered, torsional strain decreases, increasing stability.
Step 3: Conclusion.
Both statements correctly describe conformational behavior of n-butane.
In n-butane, the eclipsed conformation is the least stable due to maximum torsional strain, while the anti-staggered conformation is the most stable.
Step 2: Effect of dihedral angle.
As the dihedral angle increases from eclipsed to staggered, torsional strain decreases, increasing stability.
Step 3: Conclusion.
Both statements correctly describe conformational behavior of n-butane.
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