Dihedral angle of least stable conformer of ethane is :
A
0∘
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B
120∘
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C
180∘
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D
60∘
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Solution
The correct option is A0∘ Ethane has two conformers
(i) Eclipsed
(ii) Staggered
Eclipsed conformer is least stable while staggered conformer is most stable. In eclipsed conformer the dihedral angle is 0∘