Question

Observe the following formula 

 The groups/atoms in the plane of the paper are

• A. H, Cl, C
• B. CH$_3$, Cl
• C. H, CH$_3$, C
• D. CH$_3$, C$_2$H$_5$, C

Hint:

- Wedge-Dash Notation helps visualize 3D structures of molecules in a 2D format.
- Solid Wedges indicate bonds toward the viewer, dashed wedges indicate bonds away, and straight lines represent groups in the plane.
- Recognizing these conventions helps in stereochemistry and organic molecule analysis.

Answer 1

The Correct Option is D

Step 1: Understanding the Structure 
- The given image represents a tetrahedral carbon center with four different groups attached. 
- The wedge-dash representation is used to show 3D molecular structures: 
- Solid wedge (triangle) represents a group coming out of the plane (toward the viewer). 
- Dashed wedge (dashed line) represents a group going behind the plane (away from the viewer). 
- Straight lines represent groups in the plane of the paper. 

Step 2: Identifying the Groups in the Plane of the Paper 
- The two groups represented by straight lines are in the plane of the paper. 
- From the given structure, the groups in the plane are CH$_3$, C$_2$H$_5$, and C. 
- Therefore, the correct answer is Option (4) CH$_3$, C$_2$H$_5$, C.