Topic: Alkanes: conformations, halogenation mechanism· Hydrocarbons

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

1. Bond angle changes but bond length remains same

2. Both bond angle and bond length change

3. Both bond angles and bond length remains same

4. Bond angle remains same but bond length changes

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Answer: 3. Both bond angles and bond length remains same

Key idea: conformers differ only by rotation about the C-C single bond.

Staggered and eclipsed forms of ethane differ in the dihedral angle between C-H bonds on the two carbons. Bond lengths (C-C, C-H) and bond angles (about \(109.5^\circ\)) stay the same in all conformers. So both bond angle and bond length remain the same.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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

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