Which of the following will have the least hi | vedclass

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(A) The rotation about a $C-C$ bond is determined by the steric hindrance of the substituents attached to the carbon atoms.$A$) $CH_3-CH_3$ (Ethane) h

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Ethane

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(A) The rotation about a $C-C$ bond is determined by the steric hindrance of the substituents attached to the carbon atoms.$A$) $CH_3-CH_3$ (Ethane) has only small hydrogen atoms,allowing free rotation.$B$) $CH_2=CH_2$ (Ethylene) has a double bond,which restricts rotation.$C$) $CH \equiv CH$ (Acetylene) has a triple bond,which restricts rotation.$D$) $C_2Cl_6$ (Hexachloroethane) has bulky chlorine atoms that cause significant steric hindrance,making rotation difficult.Therefore,ethane has the least hindered rotation.

Which of the following will have the least hindered rotation about the carbon-carbon bond?

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