Question

With respect to the conformers of ethane, which of the following statements is true?

• A. Bond angle remains same but bond length changes
• B. Bond angles changes but bond length remains same
• C. Both bond angle and bond length change
• D. Both bond angles and bond length remain same

Answer 1

The correct option is D

Both bond angles and bond length remain same

Isomers which exist due to rotation about single bonds without cleavage of any bonds are called conformers. In ethane, an infinite number of conformations are possible. There are two extreme forms, the staggered conformation, which is the most stable and the eclipsed conformation of ethane, bond angle and bond length remains same while their energy, stability and dihedral angle are different.