Dihedral angle in staggerred form of ethane is

Options

A. `0^(@)`
B. `120^(@)`
C. `60^(@)`
D. `180^(@)`

Answer

To determine the dihedral angle in the staggered form of ethane, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Ethane**: Ethane (C2H6) consists of two carbon atoms bonded to each other, with each carbon atom bonded to three hydrogen atoms.

2. **Visualize the Conformations**: Ethane can adopt different conformations based on the rotation around the carbon-carbon single bond. The two main forms are the eclipsed and staggered forms.

3. **Draw the Staggered Form**: In the staggered conformation, the hydrogen atoms on one carbon are positioned opposite to the hydrogen atoms on the other carbon. This means that the bonds are staggered relative to each other.

4. **Identify the Dihedral Angle**: The dihedral angle is defined as the angle between two planes formed by four atoms. In the case of ethane in the staggered form, the angle between the two hydrogen atoms on one carbon and the two hydrogen atoms on the adjacent carbon is what we are looking for.

5. **Calculate the Dihedral Angle**: In the staggered conformation, the dihedral angle between the two sets of hydrogen atoms is 60 degrees. This is because the hydrogen atoms are positioned at the vertices of a tetrahedron, and the angle formed between the bonds is 60 degrees.

6. **Conclusion**: Therefore, the dihedral angle in the staggered form of ethane is **60 degrees**.

### Final Answer:
The dihedral angle in the staggered form of ethane is **60 degrees**.

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