Which of the following conformations of n-butane is the least stable ?
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There are two kinds of eclipsed conformations. One having methyl-methyl eclipsing, called total or fully eclipsed (I) and is likely to be the conformation of highest energy (least stable) and the other having methyl-hydrogen eclipsing, called eclipsed conformation (III) having slightly lower energy than (I).
ANSWER : : Fully eclipsed.
ANSWER : : Fully eclipsed.
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