Which of the following conformations will be | vedclass

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(A) The stability of conformations of butane is determined by the magnitude of van der Waals strain and torsional strain. $1$. The anti-conformation (

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(A) The stability of conformations of butane is determined by the magnitude of van der Waals strain and torsional strain. $1$. The anti-conformation (where the two $Me$ groups are $180^{\circ}$ apart) has the lowest energy because it minimizes steric repulsion (van der Waals strain) between the bulky methyl groups and minimizes torsional strain. $2$. The gauche conformation has higher energy than the anti-conformation due to steric repulsion between the two $Me$ groups. $3$. Eclipsed conformations have the highest energy due to significant torsional strain and steric repulsion. $4$. Therefore,the anti-conformation,as shown in option $A$,is the most stable.

Which of the following conformations will be the most stable?

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