The dihedral angle in staggered form of Newman projection of 1, 1, 1-Trichloro ethane is ......... degree. (Round off to the nearest integer) (Round off to the nearest integer)
(Round off to the nearest integer)

Answer

To find the dihedral angle in the staggered form of the Newman projection of 1,1,1-Trichloroethane, we can follow these steps:

### Step 1: Understand the Structure
1,1,1-Trichloroethane has the formula C2H3Cl3. In this compound, one carbon atom (C1) is bonded to three chlorine atoms (Cl) and the other carbon atom (C2) is bonded to three hydrogen atoms (H).

### Step 2: Draw the Newman Projection
- In the Newman projection, we look down the bond connecting the two carbon atoms (C1 and C2).
- For the staggered conformation, the groups attached to the front carbon (C1) and the back carbon (C2) are arranged such that they are as far apart as possible.

### Step 3: Identify the Groups
- For the front carbon (C1), we have three chlorine atoms (Cl).
- For the back carbon (C2), we have three hydrogen atoms (H).

### Step 4: Determine the Dihedral Angle
- In the staggered conformation, the dihedral angle is defined as the angle between two groups on adjacent carbons.
- The angle between a Cl on C1 and an H on C2 in the staggered conformation is 60 degrees.

### Step 5: Conclusion
Thus, the dihedral angle in the staggered form of the Newman projection of 1,1,1-Trichloroethane is **60 degrees**.

### Final Answer
The dihedral angle is **60 degrees**.

---