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Solution


Q.

With respect to the conformers of ethane, which of the following statements is true           [2017]
1 Bond angle changes but bond length remains same.  
2 Both bond angle and bond length change.  
3 Both bond angle and bond length remain same.  
4 Bond angle remains same but bond length changes.  

Ans.

(3)

Conformers of ethane have different dihedral angles but same bond angle and bond lengths.